The space in the eye, filled with aqueous humor, bounded anteriorly by the cornea and a small portion of the sclera and posteriorly by a small portion of the ciliary body, the iris, and that part of the crystalline lens which presents through the pupil. (Cline et al., Dictionary of Visual Science, 4th ed, p109)
The most anterior portion of the uveal layer, separating the anterior chamber from the posterior. It consists of two layers - the stroma and the pigmented epithelium. Color of the iris depends on the amount of melanin in the stroma on reflection from the pigmented epithelium.
The clear, watery fluid which fills the anterior and posterior chambers of the eye. It has a refractive index lower than the crystalline lens, which it surrounds, and is involved in the metabolism of the cornea and the crystalline lens. (Cline et al., Dictionary of Visual Science, 4th ed, p319)
The front third of the eyeball that includes the structures between the front surface of the cornea and the front of the VITREOUS BODY.
Examination of the angle of the anterior chamber of the eye with a specialized optical instrument (gonioscope) or a contact prism lens.
A form of glaucoma in which the intraocular pressure increases because the angle of the anterior chamber is blocked and the aqueous humor cannot drain from the anterior chamber.
The pressure of the fluids in the eye.
A porelike structure surrounding the entire circumference of the anterior chamber through which aqueous humor circulates to the canal of Schlemm.
The transparent anterior portion of the fibrous coat of the eye consisting of five layers: stratified squamous CORNEAL EPITHELIUM; BOWMAN MEMBRANE; CORNEAL STROMA; DESCEMET MEMBRANE; and mesenchymal CORNEAL ENDOTHELIUM. It serves as the first refracting medium of the eye. It is structurally continuous with the SCLERA, avascular, receiving its nourishment by permeation through spaces between the lamellae, and is innervated by the ophthalmic division of the TRIGEMINAL NERVE via the ciliary nerves and those of the surrounding conjunctiva which together form plexuses. (Cline et al., Dictionary of Visual Science, 4th ed)
The removal of a cataractous CRYSTALLINE LENS from the eye.
The organ of sight constituting a pair of globular organs made up of a three-layered roughly spherical structure specialized for receiving and responding to light.
Diseases, dysfunctions, or disorders of or located in the iris.
A ring of tissue extending from the scleral spur to the ora serrata of the RETINA. It consists of the uveal portion and the epithelial portion. The ciliary muscle is in the uveal portion and the ciliary processes are in the epithelial portion.
The white, opaque, fibrous, outer tunic of the eyeball, covering it entirely excepting the segment covered anteriorly by the cornea. It is essentially avascular but contains apertures for vessels, lymphatics, and nerves. It receives the tendons of insertion of the extraocular muscles and at the corneoscleral junction contains the canal of Schlemm. (From Cline et al., Dictionary of Visual Science, 4th ed)
The use of statistical and mathematical methods to analyze biological observations and phenomena.
Insertion of an artificial lens to replace the natural CRYSTALLINE LENS after CATARACT EXTRACTION or to supplement the natural lens which is left in place.
Inflammation of the anterior uvea comprising the iris, angle structures, and the ciliary body. Manifestations of this disorder include ciliary injection, exudation into the anterior chamber, iris changes, and adhesions between the iris and lens (posterior synechiae). Intraocular pressure may be increased or reduced.
Bleeding in the anterior chamber of the eye.
A scientific tool based on ULTRASONOGRAPHY and used not only for the observation of microstructure in metalwork but also in living tissue. In biomedical application, the acoustic propagation speed in normal and abnormal tissues can be quantified to distinguish their tissue elasticity and other properties.
Artificial implanted lenses.
An ocular disease, occurring in many forms, having as its primary characteristics an unstable or a sustained increase in the intraocular pressure which the eye cannot withstand without damage to its structure or impairment of its function. The consequences of the increased pressure may be manifested in a variety of symptoms, depending upon type and severity, such as excavation of the optic disk, hardness of the eyeball, corneal anesthesia, reduced visual acuity, seeing of colored halos around lights, disturbed dark adaptation, visual field defects, and headaches. (Dictionary of Visual Science, 4th ed)
A procedure for removal of the crystalline lens in cataract surgery in which an anterior capsulectomy is performed by means of a needle inserted through a small incision at the temporal limbus, allowing the lens contents to fall through the dilated pupil into the anterior chamber where they are broken up by the use of ultrasound and aspirated out of the eye through the incision. (Cline, et al., Dictionary of Visual Science, 4th ed & In Focus 1993;1(1):1)
An excessive amount of fluid in the cornea due to damage of the epithelium or endothelium causing decreased visual acuity.
Measurement of light given off by fluorescein in order to assess the integrity of various ocular barriers. The method is used to investigate the blood-aqueous barrier, blood-retinal barrier, aqueous flow measurements, corneal endothelial permeability, and tear flow dynamics.
Suppurative inflammation of the tissues of the internal structures of the eye frequently associated with an infection.
Single layer of large flattened cells covering the surface of the cornea.
Diseases affecting the eye.
Tumors or cancer of the EYE.
The transparent, semigelatinous substance that fills the cavity behind the CRYSTALLINE LENS of the EYE and in front of the RETINA. It is contained in a thin hyaloid membrane and forms about four fifths of the optic globe.
The selectively permeable barrier, in the EYE, formed by the nonpigmented layer of the EPITHELIUM of the CILIARY BODY, and the ENDOTHELIUM of the BLOOD VESSELS of the IRIS. TIGHT JUNCTIONS joining adjacent cells keep the barrier between cells continuous.
Surgical removal of a section of the iris.
Incomplete rupture of the zonule with the displaced lens remaining behind the pupil. In dislocation, or complete rupture, the lens is displaced forward into the anterior chamber or backward into the vitreous body. When congenital, this condition is known as ECTOPIA LENTIS.
A transparent, biconvex structure of the EYE, enclosed in a capsule and situated behind the IRIS and in front of the vitreous humor (VITREOUS BODY). It is slightly overlapped at its margin by the ciliary processes. Adaptation by the CILIARY BODY is crucial for OCULAR ACCOMMODATION.
Refraction of LIGHT effected by the media of the EYE.
The pigmented vascular coat of the eyeball, consisting of the CHOROID; CILIARY BODY; and IRIS, which are continuous with each other. (Cline et al., Dictionary of Visual Science, 4th ed)
Inflammation of the iris characterized by circumcorneal injection, aqueous flare, keratotic precipitates, and constricted and sluggish pupil along with discoloration of the iris.
Introduction of substances into the body using a needle and syringe.
A layer of the cornea. It is the basal lamina of the CORNEAL ENDOTHELIUM (from which it is secreted) separating it from the CORNEAL STROMA. It is a homogeneous structure composed of fine collagenous filaments, and slowly increases in thickness with age.
A procedure in which fluid is withdrawn from a body cavity or organ via a trocar and cannula, needle, or other hollow instrument.
The distance between the anterior and posterior poles of the eye, measured either by ULTRASONOGRAPHY or by partial coherence interferometry.
Partial or total replacement of the CORNEA from one human or animal to another.
Mild to severe infections of the eye and its adjacent structures (adnexa) by adult or larval protozoan or metazoan parasites.
Deviations from the average or standard indices of refraction of the eye through its dioptric or refractive apparatus.
Measurement of ocular tension (INTRAOCULAR PRESSURE) with a tonometer. (Cline, et al., Dictionary of Visual Science, 4th ed)
The surgical removal of the eyeball leaving the eye muscles and remaining orbital contents intact.
Sterile solutions that are intended for instillation into the eye. It does not include solutions for cleaning eyeglasses or CONTACT LENS SOLUTIONS.
An imaging method using LASERS that is used for mapping subsurface structure. When a reflective site in the sample is at the same optical path length (coherence) as the reference mirror, the detector observes interference fringes.
Substances that display the physical properties of ELASTICITY and VISCOSITY. The dual-nature of these substances causes them to resist applied forces in a time-dependent manner.
Clarity or sharpness of OCULAR VISION or the ability of the eye to see fine details. Visual acuity depends on the functions of RETINA, neuronal transmission, and the interpretative ability of the brain. Normal visual acuity is expressed as 20/20 indicating that one can see at 20 feet what should normally be seen at that distance. Visual acuity can also be influenced by brightness, color, and contrast.
Inflammation of part or all of the uvea, the middle (vascular) tunic of the eye, and commonly involving the other tunics (sclera and cornea, and the retina). (Dorland, 27th ed)
Diseases of the uvea.
A refractive error in which rays of light entering the EYE parallel to the optic axis are brought to a focus in front of the RETINA when accommodation (ACCOMMODATION, OCULAR) is relaxed. This results from an overly curved CORNEA or from the eyeball being too long from front to back. It is also called nearsightedness.
Any surgical procedure for treatment of glaucoma by means of puncture or reshaping of the trabecular meshwork. It includes goniotomy, trabeculectomy, and laser perforation.
Diseases of the cornea.
Devices used in a technique by which cells or tissues are grown in vitro or, by implantation, in vivo within chambers permeable to diffusion of solutes across the chamber walls. The chambers are used for studies of drug effects, osmotic responses, cytogenic and immunologic phenomena, metabolism, etc., and include tissue cages.
The aperture in the iris through which light passes.
Infections in the inner or external eye caused by microorganisms belonging to several families of bacteria. Some of the more common genera found are Haemophilus, Neisseria, Staphylococcus, Streptococcus, and Chlamydia.
Abnormally low intraocular pressure often related to chronic inflammation (uveitis).
The use of photothermal effects of LASERS to coagulate, incise, vaporize, resect, dissect, or resurface tissue.
A refractive error in which rays of light entering the eye parallel to the optic axis are brought to a focus behind the retina, as a result of the eyeball being too short from front to back. It is also called farsightedness because the near point is more distant than it is in emmetropia with an equal amplitude of accommodation. (Dorland, 27th ed)
Methods and procedures for the diagnosis of diseases of the eye or of vision disorders.
The thin noncellular outer covering of the CRYSTALLINE LENS composed mainly of COLLAGEN TYPE IV and GLYCOSAMINOGLYCANS. It is secreted by the embryonic anterior and posterior epithelium. The embryonic posterior epithelium later disappears.
Presence of an intraocular lens after cataract extraction.
An increased reactivity to specific antigens mediated not by antibodies but by cells.
Disorder occurring in the central or peripheral area of the cornea. The usual degree of transparency becomes relatively opaque.
Agents that dilate the pupil. They may be either sympathomimetics or parasympatholytics.
Partial or complete opacity on or in the lens or capsule of one or both eyes, impairing vision or causing blindness. The many kinds of cataract are classified by their morphology (size, shape, location) or etiology (cause and time of occurrence). (Dorland, 27th ed)
Inflammation of the RETINA. It is rarely limited to the retina, but is commonly associated with diseases of the choroid (CHORIORETINITIS) and of the OPTIC DISK (neuroretinitis).
Congenital absence of or defects in structures of the eye; may also be hereditary.
A form of secondary glaucoma which develops as a consequence of another ocular disease and is attributed to the forming of new vessels in the angle of the anterior chamber.
Measurement of distances or movements by means of the phenomena caused by the interference of two rays of light (optical interferometry) or of sound (acoustic interferometry).
The species Oryctolagus cuniculus, in the family Leporidae, order LAGOMORPHA. Rabbits are born in burrows, furless, and with eyes and ears closed. In contrast with HARES, rabbits have 22 chromosome pairs.
A condition in which the intraocular pressure is elevated above normal and which may lead to glaucoma.
Processes and properties of the EYE as a whole or of any of its parts.
The measurement of curvature and shape of the anterior surface of the cornea using techniques such as keratometry, keratoscopy, photokeratoscopy, profile photography, computer-assisted image processing and videokeratography. This measurement is often applied in the fitting of contact lenses and in diagnosing corneal diseases or corneal changes including keratoconus, which occur after keratotomy and keratoplasty.
Damage or trauma inflicted to the eye by external means. The concept includes both surface injuries and intraocular injuries.
Infections of the eye caused by minute intracellular agents. These infections may lead to severe inflammation in various parts of the eye - conjunctiva, iris, eyelids, etc. Several viruses have been identified as the causative agents. Among these are Herpesvirus, Adenovirus, Poxvirus, and Myxovirus.
Surgical formation of an external opening in the sclera, primarily in the treatment of glaucoma.
Glaucoma in which the angle of the anterior chamber is open and the trabecular meshwork does not encroach on the base of the iris.
Removal of the whole or part of the vitreous body in treating endophthalmitis, diabetic retinopathy, retinal detachment, intraocular foreign bodies, and some types of glaucoma.
Loss of CORNEAL ENDOTHELIUM usually following intraocular surgery (e.g., cataract surgery) or due to FUCHS' ENDOTHELIAL DYSTROPHY; ANGLE-CLOSURE GLAUCOMA; IRITIS; or aging.
Intraocular hemorrhage from the vessels of various tissues of the eye.
A species of the genus MACACA which typically lives near the coast in tidal creeks and mangrove swamps primarily on the islands of the Malay peninsula.
A slowly hydrolyzed muscarinic agonist with no nicotinic effects. Pilocarpine is used as a miotic and in the treatment of glaucoma.
One of the MUSCARINIC ANTAGONISTS with pharmacologic action similar to ATROPINE and used mainly as an ophthalmic parasympatholytic or mydriatic.
Surgery performed on the eye or any of its parts.
An alpha-adrenergic blocking agent that is used in Raynaud's disease. It is also used locally in the eye to reverse the mydriasis caused by phenylephrine and other sympathomimetic agents. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1312)
Experimental devices used in inhalation studies in which a person or animal is either partially or completely immersed in a chemically controlled atmosphere.
Method of making images on a sensitized surface by exposure to light or other radiant energy.
Transmission of gene defects or chromosomal aberrations/abnormalities which are expressed in extreme variation in the structure or function of the eye. These may be evident at birth, but may be manifested later with progression of the disorder.
Acute or chronic inflammation of the iris and ciliary body characterized by exudates into the anterior chamber, discoloration of the iris, and constricted, sluggish pupil. Symptoms include radiating pain, photophobia, lacrimation, and interference with vision.
The making of a continuous circular tear in the anterior capsule during cataract surgery in order to allow expression or phacoemulsification of the nucleus of the lens. (Dorland, 28th ed)
Agents causing contraction of the pupil of the eye. Some sources use the term miotics only for the parasympathomimetics but any drug used to induce miosis is included here.
The back two-thirds of the eye that includes the anterior hyaloid membrane and all of the optical structures behind it: the VITREOUS HUMOR; RETINA; CHOROID; and OPTIC NERVE.
Absence of the crystalline lens resulting from cataract extraction.
A phthalic indicator dye that appears yellow-green in normal tear film and bright green in a more alkaline medium such as the aqueous humor.
A parasympatholytic anticholinergic used solely to obtain mydriasis or cycloplegia.
The core of the crystalline lens, surrounded by the cortex.
Inanimate objects that become enclosed in the eye.
Deeply perforating or puncturing type intraocular injuries.
Conditions which affect the structure or function of the pupil of the eye, including disorders of innervation to the pupillary constrictor or dilator muscles, and disorders of pupillary reflexes.
Partial or total replacement of all layers of a central portion of the cornea.
Organic siloxanes which are polymerized to the oily stage. The oils have low surface tension and density less than 1. They are used in industrial applications and in the treatment of retinal detachment, complicated by proliferative vitreoretinopathy.
A family of spiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one derivatives. These are used as dyes, as indicators for various metals, and as fluorescent labels in immunoassays.
Tumors of the iris characterized by increased pigmentation of melanocytes. Iris nevi are composed of proliferated melanocytes and are associated with neurofibromatosis and malignant melanoma of the choroid and ciliary body. Malignant melanoma of the iris often originates from preexisting nevi.
Congenital or developmental anomaly in which the eyeballs are abnormally small.
The mucous membrane that covers the posterior surface of the eyelids and the anterior pericorneal surface of the eyeball.
Inflammation of the cornea.
The application of drug preparations to the surfaces of the body, especially the skin (ADMINISTRATION, CUTANEOUS) or mucous membranes. This method of treatment is used to avoid systemic side effects when high doses are required at a localized area or as an alternative systemic administration route, to avoid hepatic processing for example.
A surgical procedure used in treatment of glaucoma in which an opening is created through which aqueous fluid may pass from the anterior chamber into a sac created beneath the conjunctiva, thus lowering the pressure within the eye. (Hoffman, Pocket Glossary of Ophthalmologic Terminology, 1989)
The protrusion of an organ or part of an organ into a natural or artificial orifice.
The ten-layered nervous tissue membrane of the eye. It is continuous with the OPTIC NERVE and receives images of external objects and transmits visual impulses to the brain. Its outer surface is in contact with the CHOROID and the inner surface with the VITREOUS BODY. The outer-most layer is pigmented, whereas the inner nine layers are transparent.
The administration of substances into the eye with a hypodermic syringe.
The lamellated connective tissue constituting the thickest layer of the cornea between the Bowman and Descemet membranes.
The dioptric adjustment of the EYE (to attain maximal sharpness of retinal imagery for an object of regard) referring to the ability, to the mechanism, or to the process. Ocular accommodation is the effecting of refractive changes by changes in the shape of the CRYSTALLINE LENS. Loosely, it refers to ocular adjustments for VISION, OCULAR at various distances. (Cline et al., Dictionary of Visual Science, 4th ed)
The theory that human CHARACTER and BEHAVIOR are shaped by the GENES that comprise the individual's GENOTYPE rather than by CULTURE; ENVIRONMENT; and individual choice.
Pathologic processes that affect patients after a surgical procedure. They may or may not be related to the disease for which the surgery was done, and they may or may not be direct results of the surgery.
Measuring and weighing systems and processes.
A surgical specialty concerned with the structure and function of the eye and the medical and surgical treatment of its defects and diseases.
A filarial parasite primarily affecting dogs and cats, but causing an emerging zoonosis in humans involving subcutaneous lesions. It is transmitted by MOSQUITOES.
Lenses, generally made of plastic or silicone, that are implanted into the eye in front of the natural EYE LENS, by the IRIS, to improve VISION, OCULAR. These intraocular lenses are used to supplement the natural lens instead of replacing it.
Mild to fulminant necrotizing vaso-occlusive retinitis associated with a high incidence of retinal detachment and poor vision outcome.
Pupillary constriction. This may result from congenital absence of the dilatator pupillary muscle, defective sympathetic innervation, or irritation of the CONJUNCTIVA or CORNEA.
The washing of a body cavity or surface by flowing water or solution for therapy or diagnosis.
A form of herpetic keratitis characterized by the formation of small vesicles which break down and coalesce to form recurring dendritic ulcers, characteristically irregular, linear, branching, and ending in knoblike extremities. (Dictionary of Visual Science, 3d ed)
Devices, usually incorporating unidirectional valves, which are surgically inserted in the sclera to maintain normal intraocular pressure.
Lasers which use a solid, as opposed to a liquid or gas, as the lasing medium. Common materials used are crystals, such as YAG (YTTRIUM aluminum garnet); alexandrite; and CORUNDUM, doped with a rare earth element such as a NEODYMIUM; ERBIUM; or HOLMIUM. The output is sometimes additionally modified by addition of non-linear optical materials such as potassium titanyl phosphate crystal, which for example is used with neodymium YAG lasers to convert the output light to the visible range.
Application of pharmaceutically active agents on the tissues of the EYE.
A beta-adrenergic antagonist similar in action to PROPRANOLOL. The levo-isomer is the more active. Timolol has been proposed as an antihypertensive, antiarrhythmic, antiangina, and antiglaucoma agent. It is also used in the treatment of MIGRAINE DISORDERS and tremor.
Any fluid-filled closed cavity or sac that is lined by an EPITHELIUM. Cysts can be of normal, abnormal, non-neoplastic, or neoplastic tissues.
Inflammation of the choroid in which the sensory retina becomes edematous and opaque. The inflammatory cells and exudate may burst through the sensory retina to cloud the vitreous body.
Separation of the inner layers of the retina (neural retina) from the pigment epithelium. Retinal detachment occurs more commonly in men than in women, in eyes with degenerative myopia, in aging and in aphakia. It may occur after an uncomplicated cataract extraction, but it is seen more often if vitreous humor has been lost during surgery. (Dorland, 27th ed; Newell, Ophthalmology: Principles and Concepts, 7th ed, p310-12).

In oculo transplants of myometrium from postpartum guinea pigs fail to support sympathetic reinnervation. (1/841)

Sympathetic nerves to the enlarged fetus-containing region of the uterus undergo degenerative changes during late pregnancy and show slow regrowth after parturition. It is not known whether this unusual response of sympathetic nerves to smooth muscle hypertrophy is due to the sensitivity of short adrenergic neurons to hormonal changes, or whether the nerves respond to changes in the neurotrophic capacity of the target. We have investigated this question using in oculo transplantation. Small pieces of myometrium from the uterine horn of virgin guinea pigs, or from the region previously occupied by the placenta and fetus in postpartum guinea pigs, were transplanted into the anterior eye chamber. After 3 wk in oculo, the pattern of reinnervation of the transplants was assessed on whole mount stretch preparations stained for tyrosine hydroxylase. The histology of the transplants was examined in toluidine blue-stained semithin sections. Myometrial transplants from virgin donors and uterine artery transplants from both virgin and postpartum donors became organotypically reinnervated by sympathetic fibres from the host iris. In contrast, sympathetic nerves did not reinnervate myometrial transplants from postpartum donors, although they approached the transplants and became distributed in the surrounding connective tissue. All transplanted tissues showed a normal histological appearance. Both the myometrium and uterine artery from postpartum donors retained a hypertrophic appearance after 3 wk in oculo. We interpret these results to indicate that the degeneration of sympathetic nerves in late pregnancy, as well as their slow regrowth to the uterus after delivery, may be due to changes in uterine smooth muscle rather than a particular sensitivity of short adrenergic neurons to hormonal changes.  (+info)

Latrunculin-A causes mydriasis and cycloplegia in the cynomolgus monkey. (2/841)

PURPOSE: To determine the effect of latrunculin (LAT)-A, which binds to G-actin and disassembles actin filaments, on the pupil, accommodation, and isolated ciliary muscle (CM) contraction in monkeys. METHODS: Pupil diameter (vernier calipers) and refraction (coincidence refractometry) were measured every 15 minutes from 0.75 to 3.5 hours after topical LAT-A 42 microg (approximately 10 microM in the anterior chamber [AC]). Refraction was measured every 5 minutes from 0.5 to 1.5 hours after intracameral injection of 10 microl of 50 microM LAT-A (approximately 5 microM in AC), with intramuscular infusion of 1.5 mg/kg pilocarpine HCl (PILO) during the first 15 minutes of measurements. Pupil diameter was measured at 1 and 2 hours, and refraction was measured every 5 minutes from 1 to 2 hours, after intravitreal injection of 20 microl of 1.25 mM LAT-A (approximately 10 microM in vitreous), with intramuscular infusion of 1.5 mg/kg PILO during the first 15 minutes of measurements (all after topical 2.5% phenylephrine), and contractile response of isolated CM strips, obtained <1 hour postmortem and mounted in a perfusion apparatus, to 10 microM PILO +/- LAT-A was measured at various concentrations. RESULTS: Topical LAT-A of 42 microg dilated the pupil without affecting refraction. Intracameral LAT-A of 5 microM inhibited miotic and accommodative responses to intramuscular PILO. Intravitreal LAT-A of 10 microM had no effect on accommodative or miotic responses to intramuscular PILO. LAT-A dose-dependently relaxed the PILO-contracted CM by up to 50% at 3 microM in both the longitudinal and circular vectors. CONCLUSIONS: In monkeys, LAT-A causes mydriasis and cycloplegia, perhaps related to its known ability to disrupt the actin microfilament network and consequently to affect cell contractility and adhesion. Effects of LAT-A on the iris and CM may have significant physiological and clinical implications.  (+info)

Effect of pilocarpine on visual acuity and on the dimensions of the cornea and anterior chamber. (3/841)

The effect of pilocarpine on visual acuity and on the dimensions of the cornea, anterior chamber, and lens were studied in two groups of subjects. Significant changes in ocular tension, corneal curvature, anterior chamber depth, and lens anterior radius were found in a group of 55 glaucomatous eyes as a result of pilocarpine treatment, but there was no change in corneal thickness. Out of 102 glaucomatous eyes 78 became relatively myopic, and this appears to be due to changes in the dimensions of the lens of the eye similar to those occurring in accommodation, as a result of the effect of the drug on the ciliary muscle. The effect of pilocarpine on anterior chamber depth, area, and volume was studied in 125 eyes using a photographic method, and a significant reduction in the dimensions of the anterior chamber was observed as a result of the administration of pilocarpine. A significant correlation between depth and volume was also noted and the implications of this are discussed.  (+info)

Lens extraction with ultrasound. Experiments in rabbits. (4/841)

The extraction of the rabbit lens is described using a 25 G irrigating needle and a 22 G aspirating needle; at the latter's bevelled tip lens fragmentation occurs due to the longitudinal ultrasonic vibrations generated there--an 'acoustic horn' causes the tip to vibrate with large amplitudes. The use of small needles allows considerable manoeuvrability in the anterior chamber and usually eliminates the need for corneal suturing. Push-pull coupled syringes equate the volume of irrigation with that of aspiration. This procedure makes possible lens extraction through an aperture in the anterior capsule of the rabbit's lens and a similar machine is being constructed for trial on human cataract.  (+info)

Latrunculin-A increases outflow facility in the monkey. (5/841)

PURPOSE: To determine the effect of Latrunculin (LAT)-A, a macrolide that binds to G-actin, which leads to the disassembly of actin filaments, on shape, junctions, and the cytoskeleton of cultured bovine aortic endothelial cells (BAECs) and on outflow facility in living monkeys. METHODS: Latrunculin-A dose-time-response relationships in BAECs were determined by immunofluorescence and phase contrast light microscopy, facility by two-level constant pressure anterior chamber perfusion. RESULTS: In BAECs, LAT-A caused dose- and incubation time- dependent destruction of actin bundles, cell separation, and cell loss. Cell-cell adhesions were more sensitive than focal contacts. Recovery was also dose- and time-dependent. In monkeys, exchange intracameral infusion and topical application of LAT-A induced dose- and time-dependent several-fold facility increases. The facility increase was completely reversed within several hours after drug removal. However, for at least 24 hours after a single topical LAT-A dose, perfusion with drug-free solution caused an accelerated increase in facility beyond that attributed to normal resistance washout. CONCLUSIONS: Pharmacological disorganization of the actin cytoskeleton in the trabecular meshwork by specific actin inhibitors like LAT-A may be a useful antiglaucoma strategy.  (+info)

Effect of staurosporine on outflow facility in monkeys. (6/841)

PURPOSE: To determine the effect of the serine-threonine kinase inhibitor staurosporine on outflow facility in living monkeys. METHODS: Total outflow facility was determined by two-level constant pressure perfusion of the anterior chamber bilaterally before and after intracameral infusion of staurosporine or vehicle in opposite eyes. RESULTS: Intracameral staurosporine dose-dependently doubled outflow facility, with 0.1 microM, 1 microM, and 10 microM being subthreshold, effective, and maximal doses, respectively. At 50 microM, intracameral staurosporine was less effective than 10 microM on facility and induced corneal toxicity. CONCLUSIONS: The broad-spectrum protein kinase inhibitor staurosporine increases outflow facility in living monkeys, perhaps by affecting the trabecular meshwork cytoskeleton.  (+info)

Epithelial ingrowth of anterior chamber and anterior surface of vitreous. (7/841)

This study is a case report of the histopathologic findings of the anterior chamber epithelial ingrowth in a patient who had penetrating injury in the right eye from an arrow approximately 20 years ago. The patient underwent the enucleation in the right eye due to pthisis bulbi and was fitted with a prosthetic eye. Specimens were prepared from the enucleated right eye for histopathologic observation using hematoxyllin-eosin to be observed under light microscopy. Epithelial ingrowth in the anterior chamber was noted in one layer or multi-layered epithelial cell growth. The ingrowth had spread to the posterior surface of the cornea to the anterior chamber angle, to the iris surface, and to the anterior surface of the vitreous. The finding suggests that epithelial ingrowth could invade even through a perforation site and spread wherever the cells could reach.  (+info)

T cell immunity induced by allogeneic microglia in relation to neuronal retina transplantation. (8/841)

Microglia share a lineage relationship with bone marrow-derived monocytes/macrophages and dendritic cells, and their inclusion in retinal and brain transplants may function as "passenger leukocytes. " In other solid allografts, passenger leukocytes are the primary sources of immunogenicity, triggering alloimmune rejection. We have conducted a series of in vitro and in vivo studies examining the capacity of microglia cultured from forebrain to activate alloreactive T cells and to induce and elicit alloimmunity. Cultured microglia expressed class II MHC molecules and costimulatory molecules (B7-1, B7-2, and CD40), and they secreted IL-12. Cultured microglia injected s.c. into naive recipients induced allospecific delayed hypersensitivity and elicited delayed hypersensitivity directed at alloantigens. Cultured microglia differed from conventional APCs by secreting significant amounts of mature TGF-beta2, but smaller amounts of IL-12. Moreover, while both cultured microglia and conventional APC stimulated T cell proliferation in vitro, microglia directed the responding T cells toward the Th2 pathway in which IL-4, but not IL-2 and IFN-gamma, was secreted. The abilities of microglia to secrete TGF-beta2, to stimulate alloreactive Th2 cells, and to induce anterior chamber associated immune deviation when injected into the eye of naive allogeneic mice suggest that they are not typical passenger leukocytes. The unique functional properties of cultured microglia may account for the capacity of neonatal retinal tissue transplanted into the eye to alter the systemic alloimmune response in a manner that delays, but does not prevent, graft rejection.  (+info)

Symptoms: blurred vision, halos around lights, redness and pain in the eye, nausea and vomiting, and sensitivity to light.

Diagnosis: a comprehensive eye exam, including measurements of intraocular pressure (IOP) and assessment of the angle of the eye.

Treatment: may include medication to reduce IOP, laser or surgical treatment to improve drainage, and in some cases, vitrectomy (removal of the vitreous gel).

Prognosis: with prompt and appropriate treatment, vision can be preserved. However, if left untreated, angle-closure glaucoma can lead to permanent vision loss.

Etiology: can be caused by a variety of factors, including age-related changes, cataract surgery, trauma, and inflammation.

Prevalence: is more common in certain populations, such as those of Asian descent, and in those with a family history of the condition.

Example Sentences:

1. The patient was diagnosed with iris disease and was prescribed antibiotic eye drops to help clear up the infection.
2. The doctor suspected that the patient's blurred vision was caused by an iris disease, so he referred the patient to a specialist for further evaluation.
3. Although the symptoms of iris disease can be uncomfortable, most cases can be effectively treated with medication and proper care.

Anterior uveitis can be caused by a variety of factors, including infection, autoimmune disorders, and trauma. It is often diagnosed through a combination of physical examination, imaging tests such as ultrasound or MRI, and laboratory tests to rule out other conditions. Treatment options for anterior uveitis depend on the underlying cause and may include antibiotics, anti-inflammatory medications, and surgery to remove any affected tissue.

In summary, anterior uveitis is a type of inflammation that occurs in the front part of the eye, which can cause symptoms such as redness, pain, blurred vision, and sensitivity to light. It can be caused by a variety of factors and diagnosed through a combination of physical examination, imaging tests, and laboratory tests. Treatment options depend on the underlying cause and may include antibiotics, anti-inflammatory medications, and surgery.

There are several different types of glaucoma, including:

* Open-angle glaucoma: This is the most common form of glaucoma, and is caused by slowed drainage of fluid from the eye.
* Closed-angle glaucoma: This type of glaucoma is caused by a blockage in the drainage channels of the eye, leading to a sudden increase in pressure.
* Normal-tension glaucoma: This type of glaucoma is caused by damage to the optic nerve even though the pressure in the eye is within the normal range.
* Congenital glaucoma: This is a rare type of glaucoma that is present at birth, and is caused by a developmental defect in the eye's drainage system.

Symptoms of glaucoma can include:

* Blurred vision
* Loss of peripheral vision
* Eye pain or pressure
* Redness of the eye
* Seeing halos around lights

Glaucoma is typically diagnosed with a combination of visual acuity tests, dilated eye exams, and imaging tests such as ultrasound or MRI. Treatment for glaucoma usually involves medication to reduce pressure in the eye, but may also include surgery to improve drainage or laser therapy to prevent further damage to the optic nerve.

Early detection and treatment of glaucoma is important to prevent vision loss, so it is important to have regular eye exams, especially if you are at risk for the condition. Risk factors for glaucoma include:

* Age (over 60)
* Family history of glaucoma
* Diabetes
* High blood pressure
* African or Hispanic ancestry

Overall, glaucoma is a serious eye condition that can cause vision loss if left untreated. Early detection and treatment are key to preventing vision loss and maintaining good eye health.

Some common symptoms of corneal edema include:

* Blurred vision
* Haziness or clouding of the cornea
* Increased sensitivity to light
* Redness or discharge in the eye
* Pain or discomfort in the eye

Corneal edema can be diagnosed through a comprehensive eye exam, which may include a visual acuity test, dilated eye exam, and imaging tests such as cornea scans or ultrasound. Treatment for corneal edema depends on the underlying cause and may involve antibiotics, anti-inflammatory medications, or other therapies to reduce swelling and promote healing. In some cases, surgery may be necessary to remove scar tissue or improve drainage of fluid from the eye.

If left untreated, corneal edema can lead to more serious complications such as corneal ulcers or vision loss. Therefore, it is important to seek medical attention if you experience any symptoms of corneal edema to prevent any further damage and ensure proper treatment.

Endophthalmitis can be classified into several types based on its causes, such as:

1. Postoperative endophthalmitis: This type of endophthalmitis occurs after cataract surgery or other intraocular surgeries. It is caused by bacterial infection that enters the eye through the surgical incision.
2. Endogenous endophthalmitis: This type of endophthalmitis is caused by an infection that originates within the eye, such as from a retinal detachment or uveitis.
3. Exogenous endophthalmitis: This type of endophthalmitis is caused by an infection that enters the eye from outside, such as from a penetrating injury or a foreign object in the eye.

The symptoms of endophthalmitis can include:

1. Severe pain in the eye
2. Redness and swelling of the conjunctiva
3. Difficulty seeing or blind spots in the visual field
4. Sensitivity to light
5. Increased sensitivity to touch or pressure on the eye
6. Fever and chills
7. Swollen lymph nodes
8. Enlarged pupil
9. Clouding of the vitreous humor

If you suspect that you or someone else has endophthalmitis, it is important to seek medical attention immediately. Early diagnosis and treatment can help prevent vision loss. Treatment options for endophthalmitis may include antibiotics, vitrectomy (removal of the vitreous humor), and in some cases, removal of the affected eye.

There are many different types of eye diseases, including:

1. Cataracts: A clouding of the lens in the eye that can cause blurry vision and blindness.
2. Glaucoma: A group of diseases that damage the optic nerve and can lead to vision loss and blindness.
3. Age-related macular degeneration (AMD): A condition that causes vision loss in older adults due to damage to the macula, the part of the retina responsible for central vision.
4. Diabetic retinopathy: A complication of diabetes that can cause damage to the blood vessels in the retina and lead to vision loss.
5. Detached retina: A condition where the retina becomes separated from the underlying tissue, leading to vision loss.
6. Macular hole: A small hole in the macula that can cause vision loss.
7. Amblyopia (lazy eye): A condition where one eye is weaker than the other and has reduced vision.
8. Strabismus (crossed eyes): A condition where the eyes are not aligned properly and point in different directions.
9. Conjunctivitis: An inflammation of the conjunctiva, the thin membrane that covers the white part of the eye and the inside of the eyelids.
10. Dry eye syndrome: A condition where the eyes do not produce enough tears, leading to dryness, itchiness, and irritation.

Eye diseases can be caused by a variety of factors, including genetics, age, environmental factors, and certain medical conditions. Some eye diseases are inherited, while others are acquired through lifestyle choices or medical conditions.

Symptoms of eye diseases can include blurry vision, double vision, eye pain, sensitivity to light, and redness or inflammation in the eye. Treatment options for eye diseases depend on the specific condition and can range from medication, surgery, or lifestyle changes.

Regular eye exams are important for detecting and managing eye diseases, as many conditions can be treated more effectively if caught early. If you experience any symptoms of eye disease or have concerns about your vision, it is important to see an eye doctor as soon as possible.

Some common types of eye neoplasms include:

1. Uveal melanoma: This is a malignant tumor that develops in the uvea, the middle layer of the eye. It is the most common primary intraocular cancer in adults and can spread to other parts of the body if left untreated.
2. Retinoblastoma: This is a rare type of cancer that affects children and develops in the retina. It is usually diagnosed before the age of 5 and is highly treatable with surgery, chemotherapy, and radiation therapy.
3. Conjunctival melanoma: This is a malignant tumor that develops in the conjunctiva, the thin membrane that covers the white part of the eye. It is more common in older adults and can be treated with surgery and/or radiation therapy.
4. Ocular sarcomas: These are rare types of cancer that develop in the eye tissues, including the retina, optic nerve, and uvea. They can be benign or malignant and may require surgical removal or radiation therapy.
5. Secondary intraocular tumors: These are tumors that metastasize (spread) to the eye from other parts of the body, such as breast cancer or lung cancer.

The symptoms of eye neoplasms can vary depending on their location and type, but may include:

* Blurred vision
* Eye pain or discomfort
* Redness or inflammation in the eye
* Sensitivity to light
* Floaters (specks or cobwebs in vision)
* Flashes of light
* Abnormal pupil size or shape

Early detection and treatment of eye neoplasms are important to preserve vision and prevent complications. Diagnosis is typically made through a combination of physical examination, imaging tests such as ultrasound or MRI, and biopsy (removing a small sample of tissue for examination under a microscope). Treatment options may include:

* Surgery to remove the tumor
* Radiation therapy to kill cancer cells
* Chemotherapy to destroy cancer cells with medication
* Observation and monitoring if the tumor is slow-growing or benign

It's important to seek medical attention if you experience any unusual symptoms in your eye, as early detection and treatment can improve outcomes.

Lens subluxation is a condition where the crystalline lens of the eye partially or completely dislocates from its normal position behind the iris, causing visual impairment and potential vision loss. It can occur due to various causes such as trauma, inflammation, or degenerative changes.

The term "subluxation" means a partial dislocation of a structure, and in the context of the crystalline lens, it refers to the displacement of the lens from its normal position in the eye.

Lens subluxation can be classified into several types based on the location and extent of the displacement:

1. Posterior subluxation: The lens is displaced backward, away from the iris.
2. Anterior subluxation: The lens is displaced forward, towards the iris.
3. Total subluxation: The lens is completely dislocated from its normal position.

Symptoms of lens subluxation can include blurred vision, double vision, eye pain, and sensitivity to light. Treatment options depend on the severity and cause of the condition, and may include glasses or contact lenses, medication, or surgery.

In summary, lens subluxation is a condition where the crystalline lens of the eye partially or completely dislocates from its normal position, leading to visual impairment and potential vision loss. It can occur due to various causes and can be classified into several types based on the location and extent of the displacement.

Iritis, also known as anterior uveitis, is a type of inflammatory eye disease that affects the iris, which is the coloured part of the eye. It is a condition where the iris becomes inflamed, leading to pain, redness, and blurred vision.

Causes:

The exact cause of iritis is not known, but it is believed to be an autoimmune response, where the body's immune system mistakenly attacks healthy tissue in the eye. It can also be triggered by an infection or injury.

Symptoms:

The symptoms of iritis can vary depending on the severity of the condition, but common signs include:

* Eye pain, which can be severe
* Redness and inflammation of the eye
* Blurred vision or sensitivity to light
* Seeing floaters or flashes of light
* Sensitivity to touch or pressure on the eye

Diagnosis:

Iritis is diagnosed based on a comprehensive eye exam, which includes a visual acuity test, dilated eye exam, and tonometry. The doctor may also perform additional tests such as a fluorescein dye test or imaging studies to rule out other conditions.

Treatment:

The treatment of iritis typically involves a combination of medications and therapies, including:

* Corticosteroids to reduce inflammation
* Anti-inflammatory eye drops or ointments
* Pain relief medication
* Warm compresses to the affected eye
* Eye exercises to improve vision
* In severe cases, surgery may be necessary to remove the inflamed tissue

Prognosis:

The prognosis for iritis is generally good if treated promptly and effectively. However, if left untreated, it can lead to complications such as cataracts, glaucoma, or permanent vision loss. It is important to seek medical attention immediately if symptoms persist or worsen over time.

Prevention:

There is no known prevention for iritis, but early detection and treatment can help reduce the risk of complications. Regular eye exams and awareness of the signs and symptoms can help identify the condition in its early stages.

Complications:

Iritis can lead to several complications if left untreated or if the inflammation is not properly managed. These may include:

* Cataracts: The inflammation can cause clouding of the lens, leading to vision loss.
* Glaucoma: The increased pressure in the eye can lead to damage to the optic nerve and vision loss.
* Permanent vision loss: If the inflammation is not properly managed, it can lead to permanent vision loss.
* Increased risk of infection: Iritis can increase the risk of infection, particularly if the eye is not properly cleaned and cared for.

Conclusion:

Iritis is a painful and potentially sight-threatening condition that can cause inflammation in the iris of the eye. Early detection and prompt treatment are crucial to prevent complications and preserve vision. A comprehensive understanding of the signs, symptoms, diagnosis, treatment, prognosis, prevention, and complications of iritis is essential for effective management of this condition. If you suspect you or someone you know may have iritis, it is important to seek medical attention promptly to ensure proper diagnosis and treatment.

Example: "The patient was diagnosed with ocular toxoplasmosis, a parasitic eye infection caused by the Toxoplasma gondii parasite."

Myopia occurs when the eyeball is too long or the cornea is too steep, causing light to focus in front of the retina instead of directly on it. Hyperopia is the opposite, where the eyeball is too short or the cornea is too flat, causing light to focus behind the retina. Astigmatism is caused by an irregularly shaped cornea, which causes light to focus at multiple points instead of one. Presbyopia is a loss of near vision that occurs as people age, making it harder to see close objects clearly.

In addition to these common refractive errors, there are other, less common conditions that can affect the eyes and cause blurred vision, such as amblyopia (lazy eye), strabismus (crossed eyes), and retinal detachment. These conditions can be caused by a variety of factors, including genetics, injury, or disease.

Refractive errors can have a significant impact on daily life, affecting everything from work and school performance to social interactions and overall quality of life. Fortunately, with the help of corrective lenses or surgery, many people are able to achieve clear vision and lead fulfilling lives.

There are several different types of uveitis, including:

1. Anterior uveitis: This type affects the front part of the eye and is the most common form of uveitis. It is often caused by an infection or injury.
2. Posterior uveitis: This type affects the back part of the eye and can be caused by a systemic disease such as sarcoidosis or juvenile idiopathic arthritis.
3. Intermediate uveitis: This type affects the middle layer of the eye and is often caused by an autoimmune disorder.
4. Panuveitis: This type affects the entire uvea and can be caused by a systemic disease such as vasculitis or Behçet's disease.

Symptoms of uveitis may include:

* Eye pain
* Redness and swelling in the eye
* Blurred vision
* Sensitivity to light
* Floaters (specks or cobwebs in your vision)
* Flashes of light

If you experience any of these symptoms, it is important to see an eye doctor as soon as possible. Uveitis can be diagnosed with a comprehensive eye exam, which may include imaging tests such as ultrasound or MRI. Treatment for uveitis depends on the cause and severity of the condition, but may include medication to reduce inflammation, antibiotics for infections, or surgery to remove any diseased tissue.

Early diagnosis and treatment are important to prevent complications such as cataracts, glaucoma, and blindness. If you have uveitis, it is important to follow your doctor's recommendations for treatment and monitoring to protect your vision.

There are several types of lens diseases or disorders, including:

1. Cataracts: A clouding of the lens that can cause blurred vision, double vision, and sensitivity to light. It is one of the most common causes of vision loss in older adults.
2. Astigmatism: An irregularly shaped lens that can cause blurred or distorted vision at all distances.
3. Presbyopia: A age-related condition that affects the lens' ability to accommodate, making it difficult to focus on close objects.
4. Dyslexia: A condition where the eye's lens is unable to properly focus images, leading to blurred or distorted vision.
5. Lens subluxation: A condition where the lens becomes dislocated and pushes against the iris, causing pain and blurred vision.
6. Lens luxation: A condition where the lens is completely dislocated from its normal position and can cause blindness if left untreated.
7. Traumatic cataract: A cataract that develops after an eye injury.
8. Congenital cataract: A cataract that is present at birth.
9. Secondary cataract: A cataract that develops as a complication of another eye condition, such as uveitis or diabetes.
10. Lens opacification: A clouding of the lens that can cause blurred vision and is often seen in people with diabetes or other systemic conditions.

These are some of the most common types of lens diseases, but there are others that can affect the lens of the eye as well. Treatment for lens diseases can range from glasses or contact lenses to surgery, depending on the severity and type of condition. Regular eye exams are important for early detection and treatment of these conditions to prevent vision loss.

There are many different types of uveal diseases, including:

1. Uveitis: This is inflammation of the uvea, which can be caused by a variety of factors such as infection, injury, or autoimmune disorders.
2. Iridocyclitis: This is inflammation of the iris and ciliary body.
3. Choroiditis: This is inflammation of the choroid layer of the uvea.
4. Retinal vein occlusion: This is a blockage of the veins that carry blood away from the retina, which can cause vision loss.
5. Macular edema: This is swelling of the macula, the part of the retina responsible for central vision.
6. Age-related macular degeneration (AMD): This is a condition that affects the macula and can cause vision loss over time.
7. Diabetic retinopathy: This is a complication of diabetes that can cause damage to the blood vessels in the retina and lead to vision loss.
8. Retinal detachment: This is a condition where the retina becomes separated from the underlying tissue, leading to vision loss.
9. Retinal vein thrombosis: This is a blockage of the veins that carry blood away from the retina, which can cause vision loss.
10. Uveal melanoma: This is a type of cancer that affects the uvea and can be potentially life-threatening.

These are just a few examples of uveal diseases, and there are many other conditions that can affect the uvea as well. Treatment options for uveal diseases vary depending on the specific condition and its cause, but may include medications, laser surgery, or other procedures to treat inflammation, reduce swelling, or remove tumors.

Myopia can be caused by a variety of factors, including:

1. Genetics: Myopia can run in families, and people with a family history of myopia are more likely to develop the condition.
2. Near work: Spending too much time doing close-up activities such as reading or using digital devices can increase the risk of developing myopia.
3. Poor posture: Slouching or leaning forward can cause the eye to focus incorrectly, leading to myopia.
4. Nutritional deficiencies: A diet lacking in essential nutrients such as vitamin D and omega-3 fatty acids may contribute to the development of myopia.
5. Eye stress: Prolonged eye strain due to excessive near work or other activities can lead to myopia.

Symptoms of myopia include:

1. Difficulty seeing distant objects clearly
2. Headaches or eye strain from trying to focus on distant objects
3. Squinting or rubbing the eyes to try to see distant objects more clearly
4. Difficulty seeing in low light conditions
5. Blurry vision at a distance, with close objects appearing clear.

Myopia can be diagnosed with a comprehensive eye exam, which includes a visual acuity test, refraction test, and retinoscopy. Treatment options for myopia include:

1. Glasses or contact lenses: These corrective lenses refract light properly onto the retina, allowing clear vision of both close and distant objects.
2. Laser eye surgery: Procedures such as LASIK can reshape the cornea to improve its curvature and reduce myopia.
3. Orthokeratology (ORTHO-K): A non-surgical procedure that uses a specialized contact lens to reshape the cornea while you sleep.
4. Myopia control: This involves using certain treatments or techniques to slow down the progression of myopia in children and young adults.
5. Multifocal lenses: These lenses have multiple focal points, allowing for clear vision of both near and distant objects without the need for glasses or contact lenses.

In conclusion, myopia is a common vision condition that can be caused by a variety of factors and symptoms can include difficulty seeing distant objects clearly, headaches, and eye strain. Treatment options include glasses or contact lenses, laser eye surgery, ORTHO-K, myopia control, and multifocal lenses. It is important to consult an eye doctor for a comprehensive evaluation and to determine the best course of treatment for your specific case of myopia.

1. Keratoconus: This is a progressive thinning of the cornea that can cause it to bulge into a cone-like shape, leading to blurred vision and sensitivity to light.
2. Fuchs' dystrophy: This is a condition in which the cells in the innermost layer of the cornea become damaged, leading to clouding and blurred vision.
3. Bullous keratopathy: This is a condition in which there is a large, fluid-filled bubble on the surface of the cornea, which can cause blurred vision and discomfort.
4. Corneal ulcers: These are open sores on the surface of the cornea that can be caused by infection or other conditions.
5. Dry eye syndrome: This is a condition in which the eyes do not produce enough tears, leading to dryness, irritation, and blurred vision.
6. Corneal abrasions: These are scratches on the surface of the cornea that can be caused by injury or other conditions.
7. Trachoma: This is an infectious eye disease that can cause scarring and blindness if left untreated.
8. Ocular herpes: This is a viral infection that can cause blisters on the surface of the cornea and lead to scarring and vision loss if left untreated.
9. Endophthalmitis: This is an inflammation of the inner layer of the eye that can be caused by bacterial or fungal infections, and can lead to severe vision loss if left untreated.
10. Corneal neovascularization: This is the growth of new blood vessels into the cornea, which can be a complication of other conditions such as dry eye syndrome or ocular trauma.

These are just a few examples of the many different types of corneal diseases that can affect the eyes. It's important to seek medical attention if you experience any symptoms such as pain, redness, or blurred vision in one or both eyes. Early diagnosis and treatment can help prevent complications and preserve vision.

1. Conjunctivitis: This is an infection of the conjunctiva, which is the thin membrane that covers the white part of the eye and the inside of the eyelids. It is often caused by Streptococcus pneumoniae or Haemophilus influenzae bacteria.
2. Corneal ulcers: These are open sores that develop on the surface of the cornea, which is the clear dome-shaped surface at the front of the eye. Corneal ulcers can be caused by a variety of bacteria, including Staphylococcus aureus and Streptococcus pyogenes.
3. Endophthalmitis: This is an infection that occurs inside the eye, often as a complication of cataract surgery or other types of ocular surgery. It can be caused by a variety of bacteria, including Staphylococcus aureus and Streptococcus epidermidis.
4. Keratitis: This is an infection of the cornea that can be caused by a variety of bacteria, including Pseudomonas aeruginosa and Acinetobacter baumannii.
5. Retinitis: This is an infection of the retina, which is the layer of tissue at the back of the eye that senses light and sends visual signals to the brain. Retinitis can be caused by a variety of bacteria, including Haemophilus influenzae and Streptococcus pneumoniae.

Bacterial eye infections can cause a range of symptoms, including redness, swelling, discharge, pain, and blurred vision. Treatment typically involves antibiotic eye drops or ointments, and in more severe cases, oral antibiotics may be prescribed. It is important to seek medical attention if you experience any symptoms of a bacterial eye infection, as early treatment can help prevent complications and improve outcomes.

The exact cause of Brown-Pearce carcinoma is not known, but it is thought to be related to exposure to sunlight and other environmental factors. Treatment typically involves surgical removal of the tumor, and in some cases, radiation therapy may also be recommended. Early detection and treatment are important for successful outcomes, as Brown-Pearce carcinoma can spread to other parts of the body if left untreated.

The term "Brown-Pearce" is not commonly used in modern medical practice. Instead, this type of cancer is now referred to as a "cutaneous squamous cell carcinoma, NOS (not otherwise specified)" or "cutaneous squamous cell carcinoma, variant." This change reflects the fact that Brown-Pearce carcinoma is a variant of cutaneous squamous cell carcinoma, rather than a distinct entity.

The normal IOP range for adults is between 10-21 mmHg, and any reading below 6 mmHg is considered hypotensive. Ocular hypotension can be caused by a variety of factors such as medication use, trauma, or certain medical conditions.

Symptoms of ocular hypotension include blurred vision, sensitivity to light, and eye pain. Treatment options may vary depending on the underlying cause but may include medications, laser surgery, or other interventions aimed at increasing IOP. Early diagnosis and management are essential to prevent more severe complications.

Hyperopia, also known as farsightedness, is a common vision condition in which close objects appear blurry while distant objects appear clear. This occurs when the eyeball is shorter than normal or the cornea is not curved enough, causing light rays to focus behind the retina rather than directly on it. Hyperopia can be treated with glasses, contact lenses, or refractive surgery.

Word origin: Greek "hyper" (beyond) + "ops" (eye) + -ia (suffix denoting a condition or state)

First recorded use: 1690s

Pseudophakia is considered a rare condition, as most cataract surgeries involve removal of the entire natural lens. However, there are certain situations where leaving behind some residual lens material can be beneficial, such as in cases where the patient has severe astigmatism or presbyopia (age-related loss of near vision).

The presence of pseudophakia can affect the visual outcome and refractive status of the eye, and may require additional surgical intervention to optimize visual acuity. It is important for ophthalmologists to be aware of this condition and consider it when evaluating patients with cataracts or other eye conditions.

Examples of delayed hypersensitivity reactions include contact dermatitis (a skin reaction to an allergic substance), tuberculin reactivity (a reaction to the bacteria that cause tuberculosis), and sarcoidosis (a condition characterized by inflammation in various organs, including the lungs and lymph nodes).

Delayed hypersensitivity reactions are important in the diagnosis and management of allergic disorders and other immune-related conditions. They can be detected through a variety of tests, including skin prick testing, patch testing, and blood tests. Treatment for delayed hypersensitivity reactions depends on the underlying cause and may involve medications such as antihistamines, corticosteroids, or immunosuppressants.

There are different types of cataracts, including:

1. Nuclear cataract: This is the most common type of cataract and affects the center of the lens.
2. Cortical cataract: This type of cataract affects the outer layer of the lens and can cause a "halo" effect around lights.
3. Posterior subcapsular cataract: This type of cataract affects the back of the lens and is more common in younger people and those with diabetes.
4. Congenital cataract: This type of cataract is present at birth and can be caused by genetic factors or other conditions.

Symptoms of cataracts can include:

* Blurred vision
* Double vision
* Sensitivity to light
* Glare
* Difficulty seeing at night
* Fading or yellowing of colors

Cataracts can be diagnosed with a comprehensive eye exam, which includes a visual acuity test, dilated eye exam, and imaging tests such as ultrasound or optical coherence tomography (OCT).

Treatment for cataracts typically involves surgery to remove the clouded lens and replace it with an artificial one called an intraocular lens (IOL). The type of IOL used will depend on the patient's age, visual needs, and other factors. In some cases, cataracts may be removed using a laser-assisted procedure.

In addition to surgery, there are also non-surgical treatments for cataracts, such as glasses or contact lenses, which can help improve vision. However, these treatments do not cure the underlying condition and are only temporary solutions.

It's important to note that cataracts are a common age-related condition and can affect anyone over the age of 40. Therefore, it's important to have regular eye exams to monitor for any changes in vision and to detect cataracts early on.

In summary, cataracts are a clouding of the lens in the eye that can cause blurred vision, double vision, sensitivity to light, and other symptoms. Treatment typically involves surgery to remove the clouded lens and replace it with an artificial one, but non-surgical treatments such as glasses or contact lenses may also be used. Regular eye exams are important for detecting cataracts early on and monitoring vision health.

There are several types of retinitis, including:

1. Retinitis pigmentosa: This is a group of inherited conditions that cause progressive vision loss due to degeneration of the retina.
2. Cytomegalovirus (CMV) retinitis: This is a type of retinitis caused by the CMV virus, which is common in people with weakened immune systems, such as those with HIV/AIDS.
3. Toxoplasma retinitis: This is a type of retinitis caused by the Toxoplasma gondii parasite, which can cause vision loss if left untreated.
4. Syphilitic retinitis: This is a type of retinitis caused by the bacteria Treponema pallidum, which can cause vision loss if left untreated.
5. Uveitis-related retinitis: This is a type of retinitis that occurs as a complication of uveitis, an inflammation of the uvea, the middle layer of the eye.

Symptoms of retinitis can include vision loss, blurred vision, sensitivity to light, and floaters (specks or cobwebs in your vision). If you experience any of these symptoms, it is important to seek medical attention as soon as possible.

Retinitis is typically diagnosed through a combination of physical examination, imaging tests such as optical coherence tomography (OCT), and laboratory tests to identify the underlying cause. Treatment for retinitis depends on the underlying cause and may include antiviral or antibacterial medications, immunosuppressive drugs, or surgery. In some cases, vision loss may be permanent, but early diagnosis and treatment can help prevent further damage and improve outcomes.

Some common types of eye abnormalities include:

1. Refractive errors: These are errors in the way the eye focuses light, causing blurry vision. Examples include myopia (nearsightedness), hyperopia (farsightedness), astigmatism, and presbyopia (age-related loss of near vision).
2. Amblyopia: This is a condition where the brain favors one eye over the other, causing poor vision in the weaker eye.
3. Cataracts: A cataract is a clouding of the lens in the eye that can cause blurry vision and increase the risk of glaucoma.
4. Glaucoma: This is a group of eye conditions that can damage the optic nerve and lead to vision loss.
5. Macular degeneration: This is a condition where the macula, the part of the retina responsible for central vision, deteriorates, leading to vision loss.
6. Diabetic retinopathy: This is a complication of diabetes that can damage the blood vessels in the retina and lead to vision loss.
7. Retinal detachment: This is a condition where the retina becomes separated from the underlying tissue, leading to vision loss.
8. Corneal abnormalities: These are irregularities in the shape or structure of the cornea, such as keratoconus, that can cause blurry vision.
9. Optic nerve disorders: These are conditions that affect the optic nerve, such as optic neuritis, that can cause vision loss.
10. Traumatic eye injuries: These are injuries to the eye or surrounding tissue that can cause vision loss or other eye abnormalities.

Eye abnormalities can be diagnosed through a comprehensive eye exam, which may include visual acuity tests, refraction tests, and imaging tests such as retinal photography or optical coherence tomography (OCT). Treatment for eye abnormalities depends on the specific condition and may include glasses or contact lenses, medication, surgery, or other therapies.

There are several subtypes of neovascular glaucoma, including:

1. Rubeosis iridis: This is a type of neovascular glaucoma that occurs when new blood vessels grow on the surface of the iris.
2. Uveitic glaucoma: This is a type of neovascular glaucoma that occurs in people with uveitis, an inflammatory condition that affects the inner layers of the eye.
3. Chronic ocular inflammation: This is a type of neovascular glaucoma that occurs when there is chronic inflammation in the eye, leading to the growth of new blood vessels.

Neovascular glaucoma is typically diagnosed with a comprehensive eye exam, which includes a visual acuity test, dilated eye exam, and imaging tests such as ultrasound or optical coherence tomography (OCT). Treatment for neovascular glaucoma usually involves medication to reduce inflammation and pressure in the eye, as well as laser surgery to destroy the new blood vessels. In some cases, a trabeculectomy, or filter surgery, may be performed to drain excess fluid from the eye and reduce pressure.

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Ocular hypertension refers to an increase in the pressure within the eye, which can lead to various eye problems if left untreated. It is a common condition that affects millions of people worldwide. In this article, we will provide a comprehensive overview of ocular hypertension, including its definition, causes, symptoms, diagnosis, and treatment options.

What is Ocular Hypertension?
-------------------------

Ocular hypertension is a condition characterized by an increase in the pressure within the eye, which can cause damage to the eye's delicate structures, such as the retina and optic nerve. The normal pressure range for the eye is between 10-21 mmHg, and anything above this range is considered hypertensive.

Causes of Ocular Hypertension
---------------------------

There are several factors that can contribute to the development of ocular hypertension. These include:

* Genetics: People with a family history of glaucoma are more likely to develop ocular hypertension.
* Age: The risk of developing ocular hypertension increases with age, especially after the age of 40.
* Race: African Americans are at a higher risk of developing ocular hypertension than other races.
* Other health conditions: Certain health conditions, such as diabetes and high blood pressure, can increase the risk of developing ocular hypertension.
* Medications: Long-term use of certain medications, such as steroids, can increase eye pressure.

Symptoms of Ocular Hypertension
---------------------------

Ocular hypertension is often asymptomatic, meaning that there are no noticeable symptoms. However, some people may experience the following symptoms:

* Blurred vision
* Eye pain or discomfort
* Redness of the eye
* Seeing halos around lights
* Nausea and vomiting

Diagnosis of Ocular Hypertension
------------------------------

Ocular hypertension can be diagnosed with a comprehensive eye exam. The exam includes:

* Visual acuity test: This test measures how well you can see at different distances.
* Dilated eye exam: This test allows your doctor to examine the inside of your eyes and check for any signs of ocular hypertension.
* Tonometry: This test measures the pressure inside your eyes.
* Ophthalmoscopy: This test allows your doctor to examine the back of your eyes and look for any signs of ocular hypertension.

Treatment of Ocular Hypertension
-----------------------------

There is no cure for ocular hypertension, but there are several treatments that can help manage the condition and prevent vision loss. These include:

* Eye drops: Medicated eye drops can be used to lower eye pressure.
* Oral medications: Oral medications, such as carbonic anhydrase inhibitors, can be used to lower eye pressure.
* Laser surgery: Laser surgery can be used to increase the drainage of fluid from the eye and lower eye pressure.
* Filtering surgery: Filtering surgery can be used to remove the vitreous gel and reduce eye pressure.

Prevention of Ocular Hypertension
-----------------------------

There is no sure way to prevent ocular hypertension, but there are several steps you can take to lower your risk of developing the condition. These include:

* Getting regular eye exams: Regular eye exams can help detect ocular hypertension early, when it is easier to treat.
* Maintaining a healthy weight: Being overweight or obese can increase your risk of developing ocular hypertension.
* Eating a healthy diet: A diet rich in fruits and vegetables can help keep your eyes healthy.
* Exercising regularly: Regular exercise can help improve blood flow and reduce eye pressure.
* Wearing protective eyewear: Wearing protective eyewear, such as sunglasses, can help protect your eyes from UV radiation and reduce your risk of developing ocular hypertension.

Prognosis of Ocular Hypertension
-----------------------------

The prognosis for ocular hypertension is generally good if the condition is detected and treated early. However, if left untreated, ocular hypertension can lead to vision loss and even blindness. It is important to seek medical attention if you experience any symptoms of ocular hypertension, such as blurred vision, eye pain, or seeing flashes of light.

Treatment for ocular hypertension usually involves medication to lower eye pressure. In some cases, laser surgery may be necessary to improve drainage of fluid from the eye. If left untreated, ocular hypertension can lead to more severe complications, such as glaucoma, which can cause permanent vision loss.

Conclusion
----------

Ocular hypertension is a common condition that can increase your risk of developing glaucoma and other eye problems. While there is no cure for ocular hypertension, early detection and treatment can help prevent complications. By understanding the causes, symptoms, diagnosis, and treatment options for ocular hypertension, you can take steps to protect your vision and maintain good eye health.

FAQs
----

1. Can ocular hypertension be cured?
No, there is no cure for ocular hypertension. However, early detection and treatment can help prevent complications.
2. What are the symptoms of ocular hypertension?
Symptoms of ocular hypertension may include blurred vision, eye pain, seeing flashes of light, and blind spots in your peripheral vision.
3. How is ocular hypertension diagnosed?
Ocular hypertension is typically diagnosed with a comprehensive eye exam, including a visual acuity test, dilated eye exam, and tonometry.
4. Can ocular hypertension lead to other eye problems?
Yes, untreated ocular hypertension can increase your risk of developing glaucoma and other eye problems, such as cataracts and optic nerve damage.
5. What are the treatment options for ocular hypertension?
Treatment for ocular hypertension usually involves medication to lower eye pressure, but in some cases, laser surgery may be necessary.
6. Is ocular hypertension inherited?
Yes, ocular hypertension can be inherited, and certain genetic factors can increase your risk of developing the condition.
7. Can ocular hypertension cause blindness?
Yes, if left untreated, ocular hypertension can lead to blindness due to optic nerve damage or glaucoma.
8. How can I reduce my risk of developing ocular hypertension?
You can reduce your risk of developing ocular hypertension by maintaining a healthy lifestyle, including regular exercise, a balanced diet, and not smoking. It is also important to have regular eye exams, especially if you have a family history of the condition.

Types of Eye Injuries:

1. Corneal abrasion: A scratch on the cornea, the clear outer layer of the eye.
2. Conjunctival bleeding: Bleeding in the conjunctiva, the thin membrane that covers the white part of the eye.
3. Hyphema: Blood in the space between the iris and the cornea.
4. Hemorrhage: Bleeding in the eyelid or under the retina.
5. Retinal detachment: Separation of the retina from the underlying tissue, which can cause vision loss if not treated promptly.
6. Optic nerve damage: Damage to the nerve that carries visual information from the eye to the brain, which can cause vision loss or blindness.
7. Orbital injury: Injury to the bones and tissues surrounding the eye, which can cause double vision, swelling, or vision loss.

Symptoms of Eye Injuries:

1. Pain in the eye or around the eye
2. Redness and swelling of the eye or eyelid
3. Difficulty seeing or blurred vision
4. Sensitivity to light
5. Double vision or loss of vision
6. Discharge or crusting around the eye
7. Swelling of the eyelids or face

Treatment of Eye Injuries:

1. Depending on the severity and nature of the injury, treatment may include antibiotics, pain relief medication, or surgery.
2. In some cases, a tube may be inserted into the eye to help drain fluid or prevent pressure from building up.
3. In severe cases, vision may not return completely, but there are many options for corrective glasses and contact lenses to improve remaining vision.
4. It is essential to seek medical attention immediately if there is a foreign object in the eye, as this can cause further damage if left untreated.
5. In cases of penetrating trauma, such as a blow to the eye, it is important to seek medical attention right away, even if there are no immediate signs of injury.
6. Follow-up appointments with an ophthalmologist are essential to monitor healing and address any complications that may arise.

Some common types of viral eye infections include:

1. Conjunctivitis caused by adenovirus: This is a highly contagious form of conjunctivitis that often affects children and can be spread through close contact with an infected person or by touching contaminated surfaces.
2. Conjunctivitis caused by enterovirus: This type of conjunctivitis is also highly contagious and can be spread through contact with an infected person's saliva, mucus, or feces.
3. Herpetic keratitis: This is a rare form of viral eye infection that is caused by the herpes simplex virus and can lead to serious complications if left untreated.
4. Epidemic keratoconjunctivitis: This is a highly contagious form of conjunctivitis that is caused by adenovirus and can affect both children and adults.

Viral eye infections are typically diagnosed through a comprehensive eye exam, which may include a visual acuity test, a dilated eye exam, and/or a viral culture. Treatment for viral eye infections usually involves antiviral medication, cold compresses, and good hygiene practices to prevent the spread of the infection.

Prevention:

To prevent the spread of viral eye infections, it is important to practice good hygiene habits such as washing your hands frequently, avoiding close contact with people who are infected, and not sharing personal items like towels or makeup. If you have a viral eye infection, it is also important to avoid touching your eyes and to cover your mouth and nose when coughing or sneezing.

Conclusion:

Viral eye infections can be highly contagious and cause uncomfortable symptoms such as redness, discharge, and blurred vision. It is important to seek medical attention if you experience any of these symptoms, as they can lead to serious complications if left untreated. Good hygiene practices and antiviral medication can help prevent and treat viral eye infections.

Open-angle glaucoma can lead to damage to the optic nerve, which can cause vision loss and even blindness if left untreated. It is important for individuals at risk for open-angle glaucoma to receive regular eye exams to monitor their eye pressure and prevent any potential vision loss.

Risk factors for developing open-angle glaucoma include:

* Increasing age
* Family history of glaucoma
* African or Hispanic ancestry
* Previous eye injuries or surgeries
* Long-term use of corticosteroid medications
* Diabetes or other health conditions that can damage blood vessels.

There are several treatment options available for open-angle glaucoma, including:

* Eye drops to reduce eye pressure
* Oral medications to reduce eye pressure
* Laser surgery to improve drainage of fluid from the eye
* Incisional surgery to improve drainage of fluid from the eye.

It is important for individuals with open-angle glaucoma to work closely with their eye care professional to determine the best course of treatment and monitor their condition regularly.

Corneal endothelial cell loss can occur due to various factors such as age-related decline, genetic disorders, inflammation, trauma, or surgery. The symptoms of corneal endothelial cell loss may include vision blurredness, glare, halos, and sensitivity to light.

There are several methods for evaluating corneal endothelial cell loss, including:

1. Clinical examination: An ophthalmologist can use a slit lamp to examine the cornea and assess the density of the endothelial cells.
2. Endothelial cell count: This is a laboratory test that measures the number of endothelial cells in a sample of corneal tissue.
3. Confocal microscopy: This is a non-invasive imaging technique that uses lasers to create high-resolution images of the cornea and can help to identify changes in the endothelium.
4. Corneal thickness measurement: This is a test that measures the thickness of the cornea, which can be affected by endothelial cell loss.

Treatment options for corneal endothelial cell loss depend on the underlying cause and severity of the condition. In some cases, medication or other conservative measures may be sufficient to manage the symptoms. However, in more severe cases, surgical intervention may be necessary to replace or support the damaged endothelial cells.

Overall, corneal endothelial cell loss is a significant condition that can impact vision and eye health. Early detection and appropriate management are essential to prevent long-term complications and maintain good visual acuity.

There are several types of eye hemorrhages, including:

1. Subretinal hemorrhage: This type of hemorrhage occurs between the retina and the choroid, and can cause vision loss if the bleeding is severe.
2. Intravitreal hemorrhage: This type of hemorrhage occurs within the vitreous humor, the gel-like substance inside the eye. It can cause clouding of the lens and vision loss.
3. Retinal hemorrhage: This type of hemorrhage occurs on the surface of the retina and can cause vision loss if the bleeding is severe.
4. Choroidal hemorrhage: This type of hemorrhage occurs within the choroid, the layer of blood vessels between the sclera and retina. It can cause vision loss if the bleeding is severe.

Eye hemorrhages can be diagnosed through a comprehensive eye exam, which includes visual acuity testing, dilated eye examination, and imaging tests such as fluorescein angiography or optical coherence tomography (OCT). Treatment for eye hemorrhages depends on the underlying cause and severity of the condition. In some cases, no treatment may be necessary, while in other cases, medication or surgery may be required to prevent further bleeding and restore vision.

1. Retinitis pigmentosa (RP): a group of degenerative diseases that affect the retina and cause progressive vision loss.
2. Leber congenital amaurosis (LCA): a rare inherited disorder that causes blindness or severe visual impairment at birth or in early childhood.
3. Stargardt disease: a genetic disorder that affects the retina and can cause progressive vision loss, usually starting in childhood.
4. Juvenile macular degeneration (JMD): a group of inherited conditions that affect the macula, the part of the retina responsible for central vision.
5. Persistent hyperplastic primary vitreous (PHPV): a rare inherited condition where abnormal development of the eye can cause vision loss or blindness.
6. Anophthalmia/microphthalmia: a rare inherited condition where one or both eyes are absent or severely underdeveloped.
7. ocular albinism: a genetic condition that affects the development of pigment in the eye, leading to visual impairment and increased risk of eye conditions such as cataracts and glaucoma.
8. Peter's anomaly: a rare inherited condition where there is an abnormal development of the cornea and lens of the eye, leading to vision loss or blindness.
9. cone-rod dystrophy: a group of inherited conditions that affect the retina and can cause progressive vision loss, usually starting in childhood.
10. Retinal dystrophy: a general term for a group of inherited disorders that affect the retina and can cause progressive vision loss, usually starting in adulthood.

These are just a few examples of hereditary eye diseases. There are many other conditions that can be inherited and affect the eyes. Genetic testing and counseling can help identify the risk of inheriting these conditions and provide information on how to manage and treat them.

Iridocyclitis can cause a range of symptoms including:

* Redness and swelling of the eye
* Pain in the eye, especially when looking at bright lights
* Sensitivity to light
* Blurred vision
* Seeing floaters or flashes of light
* Eye discharge or crusting

Iridocyclitis is usually diagnosed through a comprehensive eye exam, which may include imaging tests such as ultrasound or MRI. Treatment depends on the underlying cause, but may include antibiotics for bacterial infections, corticosteroids to reduce inflammation, and pain relief medication. In some cases, surgery may be necessary to remove the inflamed tissue.

Iridocyclitis is a serious condition that can lead to complications such as cataracts, glaucoma, or even blindness if left untreated. Therefore, it is important to seek medical attention promptly if symptoms persist or worsen over time.

Synonyms for Aphakia, postcataract include:

* Postoperative aphakia
* Postcataract aphakia
* Aphakic vision loss
* Blindness following cataract surgery

Causes and risk factors for Aphakia, postcataract:

* Cataract surgery: The most common cause of aphakia, postcataract is complications from cataract surgery. During the procedure, the natural lens of the eye may be damaged or removed accidentally.
* Infection: Infections after cataract surgery can cause inflammation and damage to the eye, leading to aphakia.
* Vitreous loss: During cataract surgery, the vitreous gel in the eye may be disturbed or lost, leading to vision loss.

Symptoms of Aphakia, postcataract:

* Blindness or vision loss
* Difficulty seeing objects clearly
* Double vision or ghosting
* Sensitivity to light
* Reduced peripheral vision

Diagnosis and treatment of Aphakia, postcataract:

* Comprehensive eye exam: An ophthalmologist will perform a comprehensive eye exam to determine the cause of the aphakia and assess the extent of vision loss.
* Visual acuity testing: The ophthalmologist will perform visual acuity tests to measure the patient's ability to see objects clearly.
* Retinal imaging: Imaging tests such as ultrasound or MRI may be used to evaluate the retina and diagnose any underlying conditions.
* Glasses or contact lenses: In some cases, glasses or contact lenses may be prescribed to improve vision.
* Intracorneal implant: An intracorneal implant may be recommended to improve vision in cases where the natural lens has been removed and there is no cataract present.
* Corneal transplant: In severe cases of aphakia, a corneal transplant may be necessary to restore vision.

Prevention of Aphakia, postcataract:

* Early detection and treatment of cataracts: Regular eye exams can help detect cataracts early, which can improve the chances of preserving vision and avoiding aphakia.
* Proper follow-up care after cataract surgery: Patients who have undergone cataract surgery should follow their postoperative instructions carefully and attend follow-up appointments to ensure that any complications are detected and treated promptly.
* Preventing eye injuries: Protective eyewear can help prevent eye injuries, which can lead to aphakia.

Prognosis of Aphakia, postcataract:
The prognosis for aphakia after cataract surgery is generally good if the condition is detected and treated promptly. With appropriate treatment, many patients can regain some or all of their vision. However, in severe cases or those with complications, the prognosis may be poorer.

It's important to note that aphakia is a rare complication of cataract surgery, and the vast majority of patients who undergo the procedure do not experience this condition. If you have undergone cataract surgery and are experiencing any unusual symptoms, it is important to seek medical attention promptly to ensure proper diagnosis and treatment.

Types of Eye Foreign Bodies:

There are several types of eye foreign bodies, including:

1. Dust and small particles: These are the most common type of eye foreign body and can enter the eye through contact with the environment or by rubbing the eyes.
2. Large objects: These can include splinters, pen tips, or other small objects that become lodged in the eye.
3. Chemical irritants: Chemicals like household cleaners or pesticides can irritate the eyes and cause foreign body sensation.
4. Microorganisms: Bacteria, viruses, and other microorganisms can enter the eye and cause inflammation, which can lead to a foreign body sensation.

Symptoms of Eye Foreign Bodies:

The symptoms of an eye foreign body can vary depending on the size and location of the object, but common signs include:

1. Redness and irritation
2. Itching or burning sensation in the eye
3. Discharge or tearing
4. Blurred vision or sensitivity to light
5. Pain or discomfort in the eye

Diagnosis and Treatment of Eye Foreign Bodies:

If you suspect that you have an eye foreign body, it is important to seek medical attention as soon as possible. A healthcare professional will perform a thorough examination of the eye to locate the foreign body and determine the best course of treatment.

Treatment for eye foreign bodies may include:

1. Flushing the eye with water or saline solution to try to dislodge the object
2. Using antibiotic drops or ointments to prevent infection
3. Removing the object with a special instrument, such as a cotton swab or forceps
4. In severe cases, surgery may be necessary to remove the foreign body.

Prevention of Eye Foreign Bodies:

To prevent eye foreign bodies, it is important to take the following precautions:

1. Avoid touching or rubbing your eyes, as this can introduce bacteria and other contaminants into the eye.
2. Keep your hands and face clean, especially after handling chemicals or other potentially harmful substances.
3. Wear protective eyewear, such as goggles or safety glasses, when working with power tools or other equipment that can generate debris.
4. Avoid wearing contact lenses while swimming or in other wet environments.
5. Keep your home and work environment clean and free of clutter to reduce the risk of objects becoming lodged in the eye.

Conclusion:

Eye foreign bodies can cause a range of symptoms, from mild discomfort to serious vision loss. If you suspect that you have an object stuck in your eye, it is important to seek medical attention as soon as possible. With prompt diagnosis and appropriate treatment, most eye foreign bodies can be successfully removed and the risk of complications minimized. By taking precautions to prevent eye injuries and seeking immediate medical care if you experience any symptoms, you can help protect your vision and maintain good eye health.

There are several types of penetrating eye injuries, including:

1. Perforating injuries: These occur when an object punctures the globe of the eye, creating a hole in the retina or the sclera. These injuries can be life-threatening and require immediate medical attention.
2. Non-perforating injuries: These occur when an object does not penetrate the globe of the eye but still causes damage to the surrounding tissues. These injuries are typically less severe than perforating injuries but can still cause significant vision loss.
3. Hyphemas: These occur when blood collects in the space between the cornea and the iris, often due to a blow to the eye.
4. Retinal detachments: These occur when the retina becomes separated from the underlying tissue, often due to a traumatic injury.

Symptoms of penetrating eye injuries can include:

* Severe pain in the eye
* Redness and swelling of the affected eye
* Difficulty seeing or blindness
* Floaters or flashes of light
* A feeling of something in the eye

Treatment of penetrating eye injuries depends on the severity of the injury and can include:

1. Immediate medical attention to assess the extent of the injury and provide appropriate treatment.
2. Surgery to repair any damage to the eye, such as removing a foreign object or repairing a retinal detachment.
3. Antibiotics to prevent infection.
4. Pain management with medication.
5. Monitoring for complications, such as glaucoma or cataracts.

Preventive measures for penetrating eye injuries include:

1. Wearing protective eyewear when performing activities that could potentially cause eye injury, such as playing sports or working with power tools.
2. Avoiding touching the eyes or face to prevent the spread of infection.
3. Keeping the environment clean and free of hazards to reduce the risk of injury.
4. Properly storing and disposing of sharp objects to prevent accidents.
5. Seeking medical attention immediately if an eye injury occurs.

It is important to seek immediate medical attention if you experience any symptoms of a penetrating eye injury, as timely treatment can help prevent complications and improve outcomes.

Examples:

* Pupillary anomalies: Abnormalities in the size, shape, or position of the pupil.
* Pupillary block: A condition where the pupil is unable to open properly due to a blockage or obstruction.
* Pupillary dilation: The widening of the pupil, which can be a sign of certain medical conditions.
* Pupillary constriction: The narrowing of the pupil, which can be a sign of other medical conditions.

Symptoms:

* Difficulty seeing or blurred vision
* Sensitivity to light
* Eye pain or discomfort
* Redness or swelling of the eye
* Difficulty moving the eyes

Diagnosis:

* Comprehensive eye exam
* Pupillary reactivity test: Measures how responsive the pupils are to light.
* Ophthalmoscopy: Examines the interior of the eye, including the retina and optic nerve.

Treatment:

* Glasses or contact lenses to correct refractive errors
* Medication to treat underlying conditions such as infection or inflammation
* Surgery to remove blockages or repair damaged tissue
* Pupillary dilators to widen the pupil and improve vision.

Iris neoplasms refer to abnormal growths or tumors that occur in the iris, which is the colored part of the eye. These growths can be benign (non-cancerous) or malignant (cancerous).

Types of Iris Neoplasms[2]

There are several types of iris neoplasms, including:

1. Iridescent tumors: These are benign growths that are usually found in the periphery of the iris and can cause changes in the color and shape of the eye.
2. Melanocytic tumors: These are malignant growths that develop from the pigment-producing cells (melanocytes) in the iris. They can be either benign or malignant.
3. Metastatic tumors: These are tumors that have spread to the eye from another part of the body, usually through the bloodstream.

Symptoms of Iris Neoplasms[3]

The symptoms of iris neoplasms can vary depending on the type and location of the growth. Common symptoms include:

1. Changes in eye color or shape
2. Blurred vision or double vision
3. Sensitivity to light
4. Eye pain or discomfort
5. Redness or swelling of the eye

Diagnosis and Treatment of Iris Neoplasms[4]

Iris neoplasms can be diagnosed with a comprehensive eye exam, which may include imaging tests such as ultrasound or MRI. The treatment of iris neoplasms depends on the type and severity of the growth. Benign tumors may not require treatment, while malignant tumors may need to be removed with surgery. In some cases, radiation therapy or chemotherapy may be recommended.

Prognosis of Iris Neoplasms[5]

The prognosis for iris neoplasms depends on the type and stage of the growth. In general, the earlier the diagnosis and treatment, the better the outcome. Benign tumors tend to have a good prognosis, while malignant tumors can be more aggressive and may have a poorer prognosis if left untreated.

Prevention of Iris Neoplasms[6]

There is no known prevention for iris neoplasms, as the causes are not fully understood. However, early detection and treatment can improve outcomes. Regular eye exams can help detect any changes in the iris, and prompt treatment can help prevent complications.

In conclusion, iris neoplasms are rare growths that can occur in the iris of the eye. While the symptoms can be concerning, the prognosis is generally good if diagnosed and treated early. Regular eye exams can help detect any changes in the iris and prevent complications. If you experience any unusual symptoms, it's important to see an eye doctor right away for a comprehensive exam.

The symptoms of microphthalmos may include:

* Small eyes with reduced visual acuity
* Difficulty with depth perception and peripheral vision
* Squinting or crossing of the eyes (strabismus)
* Poor eye movement
* Increased sensitivity to light (photophobia)
* Reduced pupillary reflexes

The causes of microphthalmos can include:

* Genetic mutations or chromosomal abnormalities
* Infections such as rubella, syphilis, or toxoplasmosis during pregnancy
* Maternal exposure to certain medications or chemicals during pregnancy
* Trauma or injury to the eye during fetal development
* Tumors or cysts in the eye or surrounding tissues

Diagnosis of microphthalmos typically involves a comprehensive eye exam, including measurements of the eye's size and visual acuity. Imaging tests such as ultrasound or MRI may also be used to evaluate the structure of the eye and surrounding tissues.

Treatment for microphthalmos depends on the underlying cause and severity of the condition. In some cases, corrective glasses or contact lenses may be sufficient to improve vision. Surgery may be necessary in more severe cases to realign the eyes or remove tumors or cysts. In cases where the microphthalmos is due to a genetic mutation, there may be no effective treatment other than managing the symptoms.

Also known as: Corneal inflammation, Eye inflammation, Keratoconjunctivitis, Ocular inflammation.

There are several types of prolapse, including:

1. Pelvic organ prolapse: This occurs when the muscles and tissues in the pelvis weaken, causing an organ to slip out of place. It can affect the uterus, bladder, or rectum.
2. Hemorrhoidal prolapse: This occurs when the veins in the rectum become swollen and protrude outside the anus.
3. Small intestine prolapse: This occurs when a portion of the small intestine slides into another part of the digestive tract.
4. Uterine prolapse: This occurs when the uterus slips out of place, often due to childbirth or menopause.
5. Cervical prolapse: This occurs when the cervix slips down into the vagina.

Symptoms of prolapse can include:

* A bulge or lump in the vaginal area
* Pain or discomfort in the pelvic area
* Difficulty controlling bowel movements or urine leakage
* Difficulty having sex due to pain or discomfort
* Feeling of fullness or heaviness in the pelvic area

Treatment for prolapse depends on the type and severity of the condition, and can include:

1. Kegel exercises: These exercises can help strengthen the muscles in the pelvic floor.
2. Pelvic floor physical therapy: This can help improve bladder and bowel control, as well as reduce pain.
3. Medications: These can include hormones to support bone density, as well as pain relievers and anti-inflammatory drugs.
4. Surgery: In some cases, surgery may be necessary to repair or replace damaged tissue.
5. Lifestyle changes: Making healthy lifestyle changes such as losing weight, quitting smoking, and avoiding heavy lifting can help manage symptoms of prolapse.

It's important to seek medical attention if you experience any symptoms of prolapse, as early treatment can help improve outcomes and reduce the risk of complications.

1. Infection: Bacterial or viral infections can develop after surgery, potentially leading to sepsis or organ failure.
2. Adhesions: Scar tissue can form during the healing process, which can cause bowel obstruction, chronic pain, or other complications.
3. Wound complications: Incisional hernias, wound dehiscence (separation of the wound edges), and wound infections can occur.
4. Respiratory problems: Pneumonia, respiratory failure, and atelectasis (collapsed lung) can develop after surgery, particularly in older adults or those with pre-existing respiratory conditions.
5. Cardiovascular complications: Myocardial infarction (heart attack), cardiac arrhythmias, and cardiac failure can occur after surgery, especially in high-risk patients.
6. Renal (kidney) problems: Acute kidney injury or chronic kidney disease can develop postoperatively, particularly in patients with pre-existing renal impairment.
7. Neurological complications: Stroke, seizures, and neuropraxia (nerve damage) can occur after surgery, especially in patients with pre-existing neurological conditions.
8. Pulmonary embolism: Blood clots can form in the legs or lungs after surgery, potentially causing pulmonary embolism.
9. Anesthesia-related complications: Respiratory and cardiac complications can occur during anesthesia, including respiratory and cardiac arrest.
10. delayed healing: Wound healing may be delayed or impaired after surgery, particularly in patients with pre-existing medical conditions.

It is important for patients to be aware of these potential complications and to discuss any concerns with their surgeon and healthcare team before undergoing surgery.

The symptoms of acute RNS may include:

1. Severe eye pain
2. Blurred vision or loss of vision
3. Sensitivity to light
4. Redness and swelling of the eye
5. Floaters (specks or cobwebs in vision)
6. Flashes of light

The exact cause of acute RNS is not known, but it is believed to be related to a viral or bacterial infection, trauma, or systemic diseases such as diabetes, high blood pressure, and autoimmune disorders.

Diagnosis of acute RNS typically involves a comprehensive eye exam, including imaging tests such as fluorescein angiography and optical coherence tomography (OCT) to evaluate the retina and optic nerve. Laboratory tests may also be ordered to rule out other causes of vision loss.

Treatment for acute RNS is focused on addressing the underlying cause and managing symptoms. This may include antiviral or antibacterial medications, corticosteroids, and pain management. In severe cases, surgery may be necessary to remove damaged tissue or repair the retina.

Prognosis for acute RNS varies depending on the underlying cause and severity of the condition. In some cases, vision loss may be permanent, while in others, vision can improve with treatment. Prompt medical attention is essential to minimize visual loss and prevent complications.

Examples of retinal diseases include:

1. Age-related macular degeneration (AMD): a leading cause of vision loss in people over the age of 50, AMD affects the macula, the part of the retina responsible for central vision.
2. Diabetic retinopathy (DR): a complication of diabetes that damages blood vessels in the retina and can cause blindness.
3. Retinal detachment: a condition where the retina becomes separated from the underlying tissue, causing vision loss.
4. Macular edema: swelling of the macula that can cause vision loss.
5. Retinal vein occlusion (RVO): a blockage of the small veins in the retina that can cause vision loss.
6. Retinitis pigmentosa (RP): a group of inherited disorders that affect the retina and can cause progressive vision loss.
7. Leber congenital amaurosis (LCA): an inherited disorder that causes blindness or severe visual impairment at birth or in early childhood.
8. Stargardt disease: a rare inherited disorder that affects the retina and can cause progressive vision loss, usually starting in childhood.
9. Juvenile macular degeneration: a rare inherited disorder that causes vision loss in young adults.
10. Retinal dystrophy: a group of inherited disorders that affect the retina and can cause progressive vision loss.

Retinal diseases can be diagnosed with a comprehensive eye exam, which includes a visual acuity test, dilated eye exam, and imaging tests such as optical coherence tomography (OCT) or fluorescein angiography. Treatment options vary depending on the specific disease and can include medication, laser surgery, or vitrectomy.

It's important to note that many retinal diseases can be inherited, so if you have a family history of eye problems, it's important to discuss your risk factors with your eye doctor. Early detection and treatment can help preserve vision and improve quality of life for those affected by these diseases.

Causes: The exact cause of dendritic keratitis is not known, but it is believed to be related to a combination of genetic and environmental factors. It can occur in people of all ages but is more common in children and young adults.

Symptoms: Symptoms of dendritic keratitis may include redness, pain, sensitivity to light, blurred vision, and eye discharge. The condition can also lead to corneal ulcers, which are open sores on the surface of the cornea that can cause infection and vision loss.

Diagnosis: Dendritic keratitis is typically diagnosed through a combination of physical examination, medical history, and imaging tests such as slit-lamp biomicroscopy and optical coherence tomography.

Treatment: Treatment for dendritic keratitis depends on the severity of the condition and may include antibiotic eye drops or ointments, anti-inflammatory medications, and surgical procedures such as corneal debridement or penetrating keratoplasty (PKP). In severe cases, the condition can lead to blindness if left untreated.

Prevention: There is no known way to prevent dendritic keratitis, but early detection and treatment can help to reduce the risk of complications. It is important for individuals with a family history of the condition or those who experience symptoms to seek medical attention as soon as possible.

There are many different types of cysts that can occur in the body, including:

1. Sebaceous cysts: These are small, usually painless cysts that form in the skin, particularly on the face, neck, or torso. They are filled with a thick, cheesy material and can become inflamed or infected.
2. Ovarian cysts: These are fluid-filled sacs that form on the ovaries. They are common in women of childbearing age and can cause pelvic pain, bloating, and other symptoms.
3. Kidney cysts: These are fluid-filled sacs that form in the kidneys. They are usually benign but can cause problems if they become large or infected.
4. Dermoid cysts: These are small, usually painless cysts that form in the skin or organs. They are filled with skin cells, hair follicles, and other tissue and can become inflamed or infected.
5. Pilar cysts: These are small, usually painless cysts that form on the scalp. They are filled with a thick, cheesy material and can become inflamed or infected.
6. Epidermoid cysts: These are small, usually painless cysts that form just under the skin. They are filled with a thick, cheesy material and can become inflamed or infected.
7. Mucous cysts: These are small, usually painless cysts that form on the fingers or toes. They are filled with a clear, sticky fluid and can become inflamed or infected.
8. Baker's cyst: This is a fluid-filled cyst that forms behind the knee. It can cause swelling and pain in the knee and is more common in women than men.
9. Tarlov cysts: These are small, fluid-filled cysts that form in the spine. They can cause back pain and other symptoms, such as sciatica.
10. ganglion cysts: These are noncancerous lumps that form on the joints or tendons. They are filled with a thick, clear fluid and can cause pain, swelling, and limited mobility.

It's important to note that this is not an exhaustive list and there may be other types of cysts that are not included here. If you suspect that you have a cyst, it's always best to consult with a healthcare professional for proper diagnosis and treatment.

Symptoms of chorioretinitis may include blurred vision, sensitivity to light, floaters, and flashes of light. Diagnosis is typically made through a combination of physical examination, imaging tests such as fluorescein angiography or optical coherence tomography, and laboratory testing to rule out other conditions.

Treatment for chorioretinitis usually involves antibiotics or antiviral medication to clear the infection, as well as steroids to reduce inflammation. In severe cases, surgery may be necessary to remove the affected area of the retina. Prognosis is generally good if the disease is caught early and treated promptly, but vision loss may occur if the disease is left untreated for an extended period of time.

The retina is a layer of cells that lines the inside of the eye and senses light to send visual signals to the brain. When the retina becomes detached, it can no longer function properly, leading to vision loss or distortion.

Retinal detachment can be caused by a variety of factors, including:

1. Age-related changes: As we age, the vitreous gel that fills the eye can become more liquid and pull away from the retina, causing a retinal detachment.
2. Injury or trauma: A blow to the head or a penetrating injury can cause a retinal detachment.
3. Medical conditions: Certain conditions, such as diabetes, high blood pressure, and sickle cell disease, can increase the risk of developing a retinal detachment.
4. Genetic factors: Some people may be more prone to developing a retinal detachment due to inherited genetic factors.

Symptoms of retinal detachment may include:

1. Flashes of light: People may see flashes of light in the peripheral vision.
2. Floaters: Specks or cobwebs may appear in the vision, particularly in the periphery.
3. Blurred vision: Blurred vision or distorted vision may occur as the retina becomes detached.
4. Loss of vision: In severe cases, a retinal detachment can cause a complete loss of vision in one eye.

If you experience any of these symptoms, it is important to seek medical attention immediately. A comprehensive eye exam can diagnose a retinal detachment and determine the appropriate treatment.

Treatment for retinal detachment typically involves surgery to reattach the retina to the underlying tissue. In some cases, laser surgery may be used to seal off any tears or holes in the retina that caused the detachment. In more severe cases, a scleral buckle or other device may be implanted to support the retina and prevent further detachment.

In addition to surgical treatment, there are some lifestyle changes you can make to help reduce your risk of developing a retinal detachment:

1. Quit smoking: Smoking has been linked to an increased risk of retinal detachment. Quitting smoking can help reduce this risk.
2. Maintain a healthy blood pressure: High blood pressure can increase the risk of retinal detachment. Monitoring and controlling your blood pressure can help reduce this risk.
3. Wear protective eyewear: If you participate in activities that could potentially cause eye injury, such as sports or working with hazardous materials, wearing protective eyewear can help reduce the risk of retinal detachment.
4. Get regular eye exams: Regular comprehensive eye exams can help detect any potential issues with the retina before they become serious problems.

Overall, a retinal detachment is a serious condition that requires prompt medical attention to prevent long-term vision loss. By understanding the causes and symptoms of retinal detachment, as well as making lifestyle changes to reduce your risk, you can help protect your vision and maintain good eye health.

The anterior chamber angle is the structure which determines the anterior chamber depth. An extremely narrow anterior chamber ... Gonioscopy of the anterior chamber angle Gonioscopy of the anterior chamber angle. Labeled structures: 1. Schwalbe's line, 2. ... The anterior chamber angle is a part of the eye located between the cornea and iris which contains the trabecular meshwork. The ...
... is used in the management of acute angle closure glaucoma, and uveitis. It can also prevent a ... Anterior chamber paracentesis (ACP) is a surgical procedure done to reduce intraocular pressure (IOP) of the eye. The procedure ... In this procedure aqueous humor from the anterior chamber of eyeball is drained out by using a tuberculin syringe, with or ... Cheung, C. M. G.; Durrani, O. M.; Murray, P. I. (1 April 2004). "The safety of anterior chamber paracentesis in patients with ...
Gonioscopy of the anterior chamber angle Gonioscopy of the anterior chamber angle. Labeled structures: 1. Schwalbe's line, 2. ... One peculiar feature of the anterior chamber is dampened immune response to allogenic grafts. This is called anterior chamber ... This ratio is linearly correlated with the depth of the anterior chamber with the following equation: Anterior chamber depth ( ... Hyphema, anterior uveitis and glaucoma are three main pathologies in this area. In hyphema, blood fills the anterior chamber as ...
... which were formerly known as anterior segment cleavage syndromes, anterior chamber segmentation syndromes or mesodermal ... Anterior chamber cleavage syndrome. A stepladder classification. Surv Ophthalmol 1975;20:3e27. Idrees, F., Vaideanu, D., Fraser ... Espana, E. M., Mora, R., Liebmann, J., & Ritch, R. (2007). Bilateral Prominent Schwalbe Ring in the Anterior Chamber in a ... with the surgeon working behind the iris and creating a neopupil with an anterior chamber vitrectome. It requires very few ...
Many aphakic and pseudophakic IOLs such as anterior chamber IOLs or 3 piece posterior chamber IOLs can be used interchangeably ... Anterior chamber IOL (ACIOL). A less-common type of intraocular lens, which is sometimes used if a PCIOL is not an option for a ... placed in the anterior chamber. They are notorious[citation needed] for their negative impact on the corneal endothelial lining ... Posterior chamber IOL (PCIOL). This is by far the most common type of implanted lens after cataract surgery in the United ...
"Gnathostomiasis of the anterior chamber". Indian Journal of Medical Microbiology. 25 (3): 276-8. doi:10.4103/0255-0857.34775. ... The posterior portion of the nematode is smooth while the anterior half is covered with fine leaf-like spines. The head is ...
Interior of anterior chamber of eye. The crystalline lens, hardened and divided. Section through the margin of the lens, ... The anterior surface is less curved than the posterior. In the adult, the lens is typically circa 10 mm in diameter and has an ... The lens is part of the anterior segment of the human eye. In front of the lens is the iris, which regulates the amount of ... The lens is flatter on its anterior side than on its posterior side. In humans, the refractive power of the lens in its natural ...
Granulomas also form in the anterior chamber. However purulent conjunctival discharge and hemorrhaging were not observed as ...
Anterior chamber paracentesis Paracentesis at eMedicine Farlex dictionary > paracentesis, citing: Gale Encyclopedia of Medicine ...
Puncture of anterior chamber in acute leprous inflammation. 1935 Japanese Leprosy Congress. Detection of leprosy bacilli in ... chamber fluid. 1936 Japanese Leprosy Congress Treatment of ulcer of cornea. 1937 Japanese Leprosy Congress. Intraocular ...
The anterior chamber drainage angle is then graded as a ratio between the peripheral anterior chamber depth and corneal ... The Van Herick technique is an eye examination method used to determine the size of the anterior chamber angle of the eye. ... In addition, the ACA (anterior chamber angle) ratio was found to be highly dependent on the corneal thickness as a thin cornea ... The technique also may be considered of inadequate scope, as it only provides an estimate of the anterior chamber angle (ACA) ...
ISBN 978-0-7216-2921-6. Osuntokun O, Olurin O (March 1975). "Filarial worm (Loa loa) in the anterior chamber. Report of two ...
It collects aqueous humor from the anterior chamber and delivers it into the episcleral blood vessels. Canaloplasty may be used ... Schlemm's canal collects aqueous humor from the anterior chamber. It delivers it into the episcleral blood vessels via aqueous ...
Once in the anterior chamber and while firmly holding the lens with forceps, temporal and nasal iris tissue is enclavated with ... Anterior chamber depth (ACD, i.e. the distance between the crystalline lens and cornea including the corneal thickness) is ... Multiple studies have shown a 12-17 µm/year decrease in the anterior chamber depth with aging. If a phakic IOL patient is ... Phakic IOLs are designed to correct high myopia ranging from −5 to −20 D if the patient has enough anterior chamber depth (ACD ...
A large hyphema may require careful anterior chamber washout. Rebleeds may require additional intervention and therapy. Later, ... Chorich Lj, 3rd; Davidorf, FH; Chambers, RB; Weber, PA (1998). "Bungee cord-associated ocular injuries". American Journal of ...
The attack may be associated with anterior chamber flare. These symptoms disappear in 1 to 2 days, but blurred vision may last ...
Iritis is the inflammation of the anterior chamber and iris. Iridocyclitis is inflammation of the iris and ciliary body with ... In anterior uveitis, no associated condition or syndrome is found in approximately one-half of cases. However, anterior uveitis ... presence of cells and flare in the anterior chamber, and keratic precipitates ("KP") on the posterior surface of the cornea. In ... and ophthalmic examination may show dilated ciliary blood vessels and the presence of cells in the anterior chamber. Uveitis ...
... and an anomalous cleavage of the anterior chamber of the eye. The disorder is similar to Robinow syndrome except for anterior ... Greenstein, R.M.; Weinbaum, P.J.; Poole, A.E. (July 1988). "Autosomal recessive Robinow-like syndrome with anterior chamber ... chamber anomalies and, in one case, hydrocephalus. ...
The Fate of Skin Homographs Transplanted to the Brain, to Subcutaneous Tissue, and to the Anterior Chamber of the Eye". British ... This is known as Anterior Chamber Associated Immune Deviation (ACAID). Sympathetic ophthalmia is a rare disease which results ... Research suggests that the exploitation of anterior chamber-associated immune deviation (ACAID), aqueous humor and its anti- ... Streilein JW, Stein-Streilein J (2002). "Anterior chamber associated immune deviation (ACAID): regulation, biological relevance ...
Its anterior third projects freely into the anterior vaginal chamber. Its walls are comparatively thick; internally they are ... The anterior portion of the vagina forms a wide chamber, closed posteriorly by a valve-like papillar structure; the interior ... In Paryphanta busbyi the anterior vaginal chamber doubtless undergoes complete eversion, and the vaginal papilla will be thrust ... From the anterior end of each gland proceeds a small salivary duct, which enters the buccal cavity a little below the ...
ISBN 978-0-323-05714-1. Scheie, Harold G. (1957). "Width and Pigmentation of the Angle of the Anterior Chamber". Archives of ...
The disease is characterized by vitritis and anterior chamber inflammation. Decreased vision due to vitreous inflammation may ...
Anterior chamber can be cleaned by making a small paracentesis in the cornea and irrigating the anterior chamber with a saline ... The angle of anterior chamber is seen open with gonioscopy. If the increased intraocular pressure is uncontrolled, it may lead ... Repeat evacuation and aspiration are required if myriad cells accumulate again in anterior chamber. Campbell et al. described ...
Non-penetrating filtering surgeries do not penetrate or enter the eye's anterior chamber. There are two types of non- ... Cioboata, M; Anghelie, A; Chiotan, C; Liora, R; Serban, R; Cornăcel, C (2014). "Benefits of anterior chamber paracentesis in ... Although an endoscopic goniotomy, which employs an endoscope to view the anterior chamber angle, may be performed, a ... and the anterior chamber. Also known as non-penetrating trabeculectomy (NPT), it is an ab externo (from the outside), major ...
The chamber in the posterior domed-portion was 10.3 meters in length by 1.8 meters wide. The anterior chamber was 2.7 meters ... The tumulus had two vertical burial chambers arranged parallel to the main axis, one on each portion of the mound. Both ... ten meters in height and a 26 meter long anterior rectangular portion, five meters in height, and is orientated north-northeast ... chambers were lined with split andesite stone blocks, and were painted in vermillion. ...
Gonioscopy of the anterior chamber angle Gonioscopy of the anterior chamber angle. Labeled structures: 1. Schwalbe's line, 2. ... The scleral spur in the visual system is a protrusion of the sclera (the white of the eye) into the anterior chamber. The spur ... Iris Anterior chamber angle cross-section imaged by an SD-OCT. Eye care professional Ophthalmology Orthoptics Vision ...
The ingress chamber is anatomically anterior and the egress chamber is posterior.: 123-124 Within Ostreoidea, the degree of ... This is the posterior of the ancestral pair; the anterior muscle is not present in post-larval stages. The adductor is divided ... This forms two chambers, one on either side of the visceral mass. ...
It causes shallowing of the anterior chamber and leads to transient myopia. As a second generation carbonic anhydrase inhibitor ...
Blood in the anterior chamber of the eye is known as hyphema. Severe hyphema covering pupillary area can cause sudden decrease ...
... the military ophthalmologist may conduct an anterior chamber washout to clear hyphemas. However, reconstruction of the anterior ... Application of the Seidel Test in Zone I will rule out seepage of the anterior chamber through a corneal perforation, while ... The Seidel test may be used to evaluate the status of the anterior chamber, thereby determining the presence of corneal ... perforation and pathological anterior chamber leakage. Zone II: region designated by the anterior chamber, lens, and pars ...
However, the following month, she suffered an anterior cruciate ligament injury in a friendly match that ended her season after ... In February 2015, Rowe joined WSL 2 side Reading with assistant manager Kelly Chambers describing her as possessing "an ...
In anterior and posterior views, the intercentrum is a dorsally half-ring, surrounding the persistent notochord from ventral ... Air pockets around the stapes of Stanocephalosaurus have been hypothesized to act as resonance chambers, meaning that the spoon ... ovoid anterior palatal vacuities, posteriorly pointed choanae, and oval interpterygoid fenestrae. Discovery of the species in a ... and a supraanarial canal that runs along the nasal and anterior half of the prefrontal. These dermo-sensory grooves suggest an ...
... "through the gill chamber"). When the eggs are laid, they are transferred directly from the urogenital to the gill chamber and ... A unique feature of this fish is the forward placement of its cloaca, under the head, anterior to the pelvic fins. Pirate perch ... chamber for gill-brooding. However, the pirate perch was found to not brood bronchially; instead, they lay their eggs within ...
Total length 186 meters Anterior rectangular portion 99 meters wide x 10 meters high Posterior circular portion 90 meter ... but no burial chamber was discovered. It was re-examined from 2011 to 2013 with ground-penetrating radar. The tumulus is ... diameter x 11 meters high Overview For anterior towards posterior From posterior towards anterior Posterior circula portion ...
The inside of the mouth, the head, the gill chamber, and the anterior portion of the body are dark brown to black. The dorsal ... The skin of the head, belly, and most of gill chamber is dark blue, and it has a relatively short tail. As for the overall body ... The general body plan, however, is virtually the same, resembling a tadpole, with a more globular shape in the anterior which ... Due to their gill chambers, Chaunacidae are able to remain still enough until their prey is within distance. Chaunacidae are a ...
... , created by the closure of anterior and posterior neuropores of the neural tube during neurulation, is a ... Plenum chamber Positive pressure enclosure Angstrom-Tech-Admin (2016-04-20). "What's the Difference Between Positive and ...
During anterior tours, backup vocals were performed by the band's backup guitarist, Steve DeMarchi. In November 2012, the ... During a New Year's Eve party under the Spire of St Mary's Cathedral, she performed with a quartet from the Irish Chamber ... and backed by the Irish Chamber Orchestra. Three new songs appear on this album: "Rupture," "Why" and "The Glory" the last song ...
... refers to a spectrum of diseases characterized by malformations of the irido-corneal angle of the anterior chamber of the eye. ... These cells lead to formation of most of the anterior segment structures of the eye (corneal stroma & endothelium, iris stroma ... This was first reported by Berg (1932). "OMIM Entry - # 601631 - ANTERIOR SEGMENT DYSGENESIS 3; ASGD3". omim.org. Retrieved 21 ...
The MGA is 0.07 mm in diameter and transmits in an anterior-posterior direction at a rate of 32.2 m/s. The LGAs are slightly ... Interior to the muscle layer is a fluid-filled chamber called a coelom that by its pressurization provides structure to the ... Eight to ten nerves arise from the cerebral ganglia to supply the prostomium, buccal chamber and pharynx. Three pairs of nerves ... Perionyx excavatus (Perrier, 1872) readily regenerated lost parts of the body, in an anterior direction from as far back as 17/ ...
Both the anterior and posterior chambers are located within the anterior cavity, while the vitreous chamber is located in the ... The vitreous chamber is the largest of the three chambers and is located behind the lens and in front of the optic nerve. This ... Within the vertebrate eye, there are considered to be three chambers: anterior, posterior, and vitreous. It is important to ... The vitreous fluid, along with supporting the lens, also functions in maintaining the shape of the entire vitreous chamber and ...
Schlemm's canal and the trabecular meshwork to enter the anterior chamber. Because of the fluid egress the iris will partially ... of ologen collagen matrix or bandage contact lens for several days followed by leak repair if necessary Flat anterior chamber ...
For symptomatic permanent tooth, root canal treatment is often challenging due to pulp chamber is filled with calcified ... Otuyemi OD (June 1994). "Traumatic anterior dental injuries related to incisor overjet and lip competence in 12-year-old ... material and the 'drop off' sensation of entering a pulp chamber will not occur. Dental trauma to the primary teeth might cause ...
... anterior versus posterior calf muscles, that is m. tibialis anterior versus the gastrocnemius/soleus complex) compared to ... enclosed chamber, was termed the Skylab Medical Experiments Altitude Test and represented the first mission. The three ... and tibialis anterior during hind limb suspension". Experimental Neurology. 96 (3): 635-649. doi:10.1016/0014-4886(87)90225-1. ... for example the tibialis anterior and extensor digitorum longus muscles in the leg, is markedly less. Histochemical and ...
She underwent treatment in a hyperbaric oxygen chamber at Assaf Harofeh Medical Center in Tzrifin, Israel, so that she would be ... Her injury included a torn anterior cruciate ligament, which had to be surgically repaired. ...
Each slit consists of a branchial chamber opening to the pharynx through a U-shaped cleft and to the exterior through a dorso- ... After a number of days or weeks, a groove begins to form around the larval midsection, with the anterior portion eventually ...
The lower lateral limit is the anterior crest of the ilium and Poupart's ligament, which runs from the anterior superior spine ... For example, the stomach of ruminants, (a suborder of mammals that includes cattle and sheep), is divided into four chambers - ... The two vertical or mid-Poupart lines are drawn from the point midway between the anterior superior spine and the pubic ... The abdominal wall is split into the posterior (back), lateral (sides), and anterior (front) walls. The abdominal muscles have ...
It then flows through the pupil of the iris into the anterior chamber, bounded posteriorly by the iris and anteriorly by the ... Over time, these pigment cells can accumulate in the anterior chamber and begin to clog the trabecular meshwork. It is a rare ... This condition is differentiated from malignant glaucoma by the presence of a deep and clear anterior chamber and a lack of ... Many people of East Asian descent are prone to developing angle closure glaucoma because of shallower anterior chamber depths, ...
At the Elimination Chamber pay-per-view, Layla and McCool defeated Raw's Gail Kim and Maryse in an inter-brand Divas tag team ... Later that month, it was confirmed that Layla had legitimately torn both her Anterior cruciate and Medial collateral ligaments ... Plummer, Dale; Tylwalk, Nick (22 February 2010). "Batista, Jericho and Michaels capitalize on Elimination Chamber opportunities ... Plummer, Dale (22 February 2013). "Smackdown!: Orton wants Elimination Chamber revenge against Swagger". Slam! Sports. Canadian ...
"Chambers makes Saddlers switch". Sky Sports. "Rotherham sign Orient striker Alex Revell". BBC Sport. 31 August 2011. "Daniels ... due to an anterior cruciate ligament injury shortly after signing his first professional contract in July 2010, during a pre- ...
A ductus communicans is a constriction of a swim bladder between the anterior and posterior chambers. This article includes a ...
Irimia A, Chambers MC, Torgerson CM, Filippou M, Hovda DA, Alger JR, Gerig G, Toga AW, Vespa PM, Kikinis R, Van Horn JD (2012 ... "Extension of corticocortical afferents into the anterior bank of the intraparietal sulcus by tool-use training in adult monkeys ... Irimia A, Chambers MC, Torgerson CM, Van Horn JD (April 2012). "Circular representation of human cortical networks for subject ... Van Horn JD, Irimia A, Torgerson CM, Chambers MC, Kikinis R, Toga AW (2012). "Mapping connectivity damage in the case of ...
... does not cause the presence of cells or flare in the anterior chamber of the eye. In 80 percent of cases, ...
Chambers, R. Andrew (2009). "A nicotine challenge to the self-medication hypothesis in a neurodevelopmental animal model of ... loss of volume in the anterior cingulate cortex, and reduced hippocampal volume. A particularly stable and replicable finding ...
... an angle of the anterior chamber of the eye. His name is associated with a corneal disorder known as Salzmann's nodular ...
... which were microfilariae moving freely in the aqueous humor of the anterior chamber of the eye. Blacklock and Strong had ... Manifestations included subcutaneous nodules, anterior eye lesions, and dermatitis. Robles sent specimens to Émile Brumpt, a ... usually on anterior lower leg Glaucoma effect - eyes malfunction, begin to see shadows or nothing Ocular involvement provides ...
More than a million larvae at a time are brooded in the gill chamber, after which they are released into the sea as veliger ... while at the anterior end it has a small shell with two valves which is adept at boring through wood. This species may have ... shedding and consuming the velum and becoming a juvenile shipworm with small horny valves at the anterior end. It can then ...
Their nests consist of a main tunnel dug diagonally into the ground, with several short side chambers off of it leading to ... Both have ring-like bands on their tergites, with females having anterior and posterior buff-colored bands on tergites 2-4, ...
One end would be inserted into a stimulus chamber, the other end is inserted directly into the nostrils. Probably one of the ... and motor nerves emerge from the anterior (ventral) roots of the spinal cord. Eleven years later, a French physiologist, ...
... Am J Ophthalmol. 2019 Sep ... Purpose: To identify risk factors predictive of postoperative double anterior chamber formation after deep anterior lamellar ... The main outcome measure was whether or not postoperative double anterior chamber (AC) occurred. ...
Tag Archive for: Anterior chamber. You are here: Home1 / Anterior chamber ...
Thin Wall Anterior Chamber Cannulas are disposable and have angled shafts and blunt tips. Overall length: 22mm. Sold 10 per box ... Home / Every Case Items / Cannulas & Cystotomes / Thin Wall Anterior Chamber Cannula, Angled AX14692. ... Home / Every Case Items / Cannulas & Cystotomes / Thin Wall Anterior Chamber Cannula, Angled AX14692. ... Thin Wall Anterior Chamber Cannula, Angled AX14692. $34.10. Thin Wall Anterior Chamber Cannula, Angled AX14692 quantity. ...
Pseudoexfoliation, zonular laxity, poor dilation, a shallow anterior chamber and a convex anterior capsule are all present in ... An extremely myopic eye with an increased anterior chamber depth that reduces visibility of the nucleus receives an ... participants should be able to perform a surgical option to reduce an anterior chamber that is overly deep. ... Intravitreal dislocation of a posterior chamber IOL has occurred in the only sighted eye of a 92 year old patient with advanced ...
Examination of the anterior segment frequently reveals a shallow anterior chamber and normal or high IOP. On the fundus ... In the aphakic eye where the vitreous fills the anterior chamber, an anterior vitrectomy can be planned as part of the primary ... The inability of the aqueous humor to pass from the posterior chamber to the anterior chamber results in the forward movement ... The anterior chamber is shallow, and the IOP is high. However, with a functioning filtration bleb, the IOP may not be high. The ...
Anterior Chamber Inflammation After Cataract Surgery: A Randomized Clinical Trial Comparing Bromfenac 0.09% to Dexamethasone ... Anterior Chamber Inflammation After Cataract Surgery: A Randomized Clinical Trial Comparing Bromfenac 0.09% to Dexamethasone ...
Adeghate E, Donath T. Morphological findings in long-term pancreatic tissue transplants in the anterior eye chamber of rats . ... Morphological findings in long-term pancreatic tissue transplants in the anterior eye chamber of rats . In: Pancreas. 1990 ; ... Morphological findings in long-term pancreatic tissue transplants in the anterior eye chamber of rats . / Adeghate, Ernest; ... Adeghate, E & Donath, T 1990, Morphological findings in long-term pancreatic tissue transplants in the anterior eye chamber of ...
anterior chamber depth was r = 0.965 (p. CONCLUSION:. Ophthalmic parameters assessed by both devices were comparable and are ... Correlation Between Corneal Keratometry, Central Corneal Thickness and Anterior Chamber De Correlation Between Corneal ... Patients planned for cataract surgery underwent measurement of central corneal thickness (CCT), anterior chamber depth (ACD), ... To compare and correlate corneal keratometry (K), central corneal thickness (CCT), and anterior chamber depth (ACD) using a ...
TRANSPLANTATION IMMUNITY PRODUCED BY HOMOGRAFTS IN THE ANTERIOR OCULAR CHAMBER-A SO-CALLED PRIVILEGED SITE. CONNELLY, DAVID M. ... BEHAVIOR OF L-FIBROBLASTS IN DIFFUSION CHAMBERS IN RESISTANT AND AND NON-RESISTANT HOSTS TREATED WITH HYDROCORTISONE. Johnson, ...
anterior chamber Cavity of the eye between the cornea and the iris containing the aqueous humor. ... Transparent liquid contained in the anterior and posterior chambers; it nourishes the iris and maintains the pressure and shape ... posterior chamber Cavity of the eye between the iris and the lens containing the aqueous humor. ... Protuberance formed by the anterior terminal part of the optic nerve in the retina; it has no light-sensitive cells and thus no ...
Randomized controlled trial of anterior-chamber intraocular lenses in Nepal: long-term follow-up.  Evans, J. R.; Henning, A.; ...
Quantitative evaluation of anterior chamber changes after iridotomy using Pentacam anterior segment analyzer. Eur J Ophthalmol ... Of note, eyes with only physical narrowing of the anterior chamber and angles are known as PACS. PACS in the presence of raised ... PAC is known as a condition with physical narrowing of the anterior chamber owing to synechiae or appositional forces, which ... Laser peripheral iridotomy changes anterior chamber architecture. Eur J Ophthalmol. 2017;27(1):49-54. https://doi.org/10.5301/ ...
Aqueous Humor of anterior chamber. Images: Related links to external sites (from Bing). ...
Tumors in the anterior chamber can cause glaucoma with secondary visual loss. The eye can become painful as a result of ...
Anterior chamber (33). *. Aqueous humour. *. Choroid (687). *. Ciliary body (40). *. Conjunctiva (255) ...
The trabecular meshwork is located in the anterior chamber angle formed at the… ... A thin plastic tube (catheter) is positioned into a heart chamber by inserting it ...
... anterior chamber NEC or NOS 69 00 97 *Surgery, anterior chamber NOS 69 00 98 Postoperative state, anterior chamber NOS 69 01 97 ... anterior chamber (pigment) 69 99 00 Disease, anterior chamber, type specified NEC 69 99 00 Flare, anterior chamber *Codes for ... anterior chamber NOS 69 00 00 Suspicious anterior chamber 69 00 08 Other checked, not described, anterior chamber 69 00 40 ... anterior chamber NOS 69 44 49 Downgrowth, epithelial, anterior chamber NOS 69 60 00 Hyphema (anterior chamber) NOS 69 60 40 ...
Anterior chamber. The front section of the eyes interior where aqueous humor flows in and out, providing nourishment to the ... The clear watery fluid in the front part of the eye known as the anterior chamber. ... Posterior chamber. The very narrow part of the eye behind the iris and in front of the lens ...
... anterior chamber) of the eye. The blood collects behind the cornea and in front of the iris. ... Hyphema is blood in the front area (anterior chamber) of the eye. The blood collects behind the cornea and in front of the iris ...
The anterior chamber and iris. The anterior chamber should only contain clear fluid, and the iris should be clearly visible. ... Haemorrhage in the anterior chamber may be seen in connection with tumours and inflammations, in bleeding disorders, and also ... Subluxation or luxation of the lens causes a deepening of the anterior chamber and also a characteristic shivering of the lens ... Iris cysts may be present in the anterior chamber. The cysts can be differentiated from tumours by their round and often ...
Orsoni JG, Daicker B, Cardillo Piccolino F. Mesectodermal leiomyoma of the ciliary body extending into the anterior chamber. ... Leiomyoma of the ciliary body extending to the anterior chamber: clinicopathologic and ultrasound biomicroscopic correlation. ... Anterior segment slit-lamp optical coherence tomography (OCT) is an effective tool in diagnosing as well as monitoring small ... Janssens K, Mertens M, Lauwers N, de Keizer RJ, Mathysen DG, De Groot V. To Study and Determine the Role of Anterior Segment ...
Intracameral injection procedure must be performed under magnification that allows clear visualization of the anterior chamber ...
Anterior chamber or lens abnormalities *Cataract *Corneal opacity *Glaucoma *Hypopyon (i.e. white blood cells accumulating in ... The anterior chamber and lens appeared normal. Posteriorly, no normal landmarks could be seen and the white/gray coloration had ... the anterior chamber) *Congenital abnormalities *Coloboma of retina, choroid or optic nerve *Incontinentia pigmenti *Myelinated ...
In a study simulating the anterior chamber by an acrylic chamber, Nicoli et al16 reported that both the active-fluidics and ... The same advantage of anterior chamber stability was also observed by Sharif-Kashani et al,12 who reported a smaller occlusion ... Experimental anterior chamber maintenance in active versus passive phacoemulsification fluidics systems. J Cataract Refract ... However, there are no published studies on the anterior chamber stability during phacoemulsification. ...
Hyphema is blood in the front area (anterior chamber) of the eye. The blood collects behind the cornea and in front of the iris ... Hyphema is blood in the front area (anterior chamber) of the eye. The blood collects behind the cornea and in front of the iris ...
Kole then under-went placement of a glaucoma drainage implant in the anterior chamber for control of his IOP. He did not want ... Anterior segment examination was notable for mild corneal edema in the right eye. Endothelial cell counts were 550 cells/mm2 in ...
  • Extravasated blood cells in the anterior chamber can occlude the iridocorneal filtration angle channels and/or the adjacent trabecular meshwork, impeding normal drainage of aqueous humor with resultant elevations in intraocular pressure. (nih.gov)
  • Aqueous humor flows out of the anterior chamber via the trabecular and uveoscleral pathways. (nih.gov)
  • In a healthy eye, clear fluid called aqueous humor nourishes tissues and continuously flows in and out of the anterior chamber, the space at the front of the eye between the cornea and the iris. (nih.gov)
  • Aqueous humor flows out of the anterior chamber through the open angle where the cornea meets the iris. (nih.gov)
  • In this interview, Michael G. Richie, MD offers his expert opinion on the Proveo 8 from Leica Microsystems as a means for outstanding visualization of the anterior chamber during MIGS. (leica-microsystems.com)
  • Has limited usefulness in anterior pulling mechanisms such as uveitis. (medscape.com)
  • Anterior uveitis means inflammation in the anterior (front) geographic area of the eye, bounded by the cornea anteriorly and the iris posteriorly. (uveitis.org)
  • It separates uveitis by anatomical location of the disease, according to the major visible signs, in the various segments of the eye: anterior uveitis, intermediate uveitis , posterior uveitis , and panuveitis . (uveitis.org)
  • Have inactive anterior uveitis or quiescent infectious uveitis not requiring such regimented and intensive standardized testing as determined by the Investigator. (nih.gov)
  • Prophylactic iridectomy is recommended for patients who receive anterior chamber intraocular lenses or who have aphakia. (medscape.com)
  • Randomized controlled trial of anterior-chamber intraocular lenses in Nepal: long-term follow-up. (who.int)
  • Hemorrhage in the anterior chamber is characterized by extravasated blood cells in the space between the cornea and iris (Figure 1 and Figure 2). (nih.gov)
  • The anterior chamber of the eye (1) is the space between the cornea (2) and the iris (3). (uveitis.org)
  • Performance of adequate and proper anterior capsulotomy, minimal handling of the cornea and avoidance of posterior capsular rent are some of the challenges of the trainee in mastering ECCE. (who.int)
  • The appropriate management of peripheral anterior synechiae (PAS) depends on the disease process that leads to the formation of the PAS. (medscape.com)
  • Posterior synechiae and/or pigment on anterior lens capsule, keratic precipitates but no anterior chamber inflammation, or both. (cdc.gov)
  • A form of anterior segment dysgenesis in which abnormal cleavage of the anterior chamber occurs. (nih.gov)
  • There was anterior segment dysgenesis and retinal non-attachment in all patients. (who.int)
  • The anomaly causing congenital blindness in these patients has components of both anterior and posterior segment dysgenesis. (who.int)
  • Correlation Between Corneal Keratometry, Central Corneal Thickness and Anterior Chamber Depth as Measured by Wavelight OB 820 Biometer and Wavelight Oculyzer II in Preoperative Cataract Surgery Patients. (bvsalud.org)
  • To compare and correlate corneal keratometry (K), central corneal thickness (CCT), and anterior chamber depth (ACD) using a partial coherence interferometry device and a Scheimpflug camera system device in patients planned for cataract surgery . (bvsalud.org)
  • Patients planned for cataract surgery underwent measurement of central corneal thickness (CCT), anterior chamber depth (ACD), and keratometric values (K) by Wavelight OB 820 biometer and Allergo Oculyzer II, preoperatively. (bvsalud.org)
  • Anterior segment examination was notable for mild corneal edema in the right eye. (aao.org)
  • Hyphema is blood in the front area (anterior chamber) of the eye. (medlineplus.gov)
  • Tumors in the anterior chamber can cause glaucoma with secondary visual loss. (medscape.com)
  • Mr. Kole then under-went placement of a glaucoma drainage implant in the anterior chamber for control of his IOP. (aao.org)
  • Ophthalmology surgical procedures involving both the anterior and posterior segment can be particularly challenging. (leica-microsystems.com)
  • When the iris is inflamed, white blood cells are shed into the anterior chamber. (uveitis.org)
  • The anterior chamber should only contain clear fluid, and the iris should be clearly visible. (vin.com)
  • Normally the iris rests on the anterior lens capsule. (vin.com)
  • Iris cysts may be present in the anterior chamber. (vin.com)
  • Subluxation or luxation of the lens causes a deepening of the anterior chamber and also a characteristic shivering of the lens when the eye moves (iridodonesis). (vin.com)
  • On the posterior lens capsule occasional small dots representing remnants of the tunica vasculosa lentis may be seen, and on the anterior lens capsule small, pigmented dots representing remnants of the pupillary membrane are not infrequently observed. (vin.com)
  • The anterior chamber and lens appeared normal. (pediatriceducation.org)
  • After completion of this educational activity, participants should be able to perform a surgical option to reduce an anterior chamber that is overly deep. (mackoolonlinecme.com)
  • In laboratory rats and mice, anterior chamber hemorrhage is not uncommon as a sequela to trauma from retrobulbar bleeding procedures. (nih.gov)
  • Our single-use Anterior Chamber Cannula, also known as Air Injection, Rycroft, and Viscoelastic cannula, is available from 19 to 30 gauge. (microsurgical.com)
  • Continuous irrigation or a viscoelastic is used to maintain the anterior chamber during the procedure. (medscape.com)
  • Morphological changes in 21-day-old embryonic and 2-day-old postnatal rat pancreatic tissue fragments transplanted into the anterior eye chamber of homologous animals for 74,77,180, and 534 days were investigated using light and electron microscopic, acetylcholinesterase enzyme, and immu-nohistochemical methods. (uaeu.ac.ae)
  • It is concluded that pancreatic tissue fragments, with the exception of the acinar component, can grow and survive with intact structure in the anterior eye chamber of homologous rats for up to 1.5 years. (uaeu.ac.ae)
  • Adeghate, E & Donath, T 1990, ' Morphological findings in long-term pancreatic tissue transplants in the anterior eye chamber of rats ', Pancreas , vol. 5, no. 3, pp. 208-305. (uaeu.ac.ae)
  • Rats with sialodacryoadenitis virus infection can also exhibit anterior chamber hemorrhage, among other ocular lesions. (nih.gov)
  • The clear watery fluid in the front part of the eye known as the anterior chamber. (barnesjewish.org)
  • Anterior chamber tap: A needle enters the eye to remove fluid. (nih.gov)
  • To identify risk factors predictive of postoperative double anterior chamber formation after deep anterior lamellar keratoplasty (DALK). (nih.gov)
  • The critical event must occur in the first trimester of pregnancy during the formation of the anterior chamber. (nih.gov)
  • Pseudoexfoliation, zonular laxity, poor dilation, a shallow anterior chamber and a convex anterior capsule are all present in this 85 year old patient. (mackoolonlinecme.com)
  • An extremely myopic eye with an increased anterior chamber depth that reduces visibility of the nucleus receives an intravitreal injection to overcome the problem. (mackoolonlinecme.com)
  • Hemorrhage (arrow) consists of large numbers of extravasated blood cells in the anterior chamber. (nih.gov)
  • There are large numbers of extravasated blood cells (arrow) in the anterior chamber. (nih.gov)
  • If anterior chamber hemorrhage is part of a more dispersed inflammatory process in the eye, it need not be diagnosed separately unless warranted by its severity. (nih.gov)
  • Haemorrhage in the anterior chamber may be seen in connection with tumours and inflammations, in bleeding disorders, and also in connection with the inherited disease Collie Eye Anomaly. (vin.com)