Anterior Chamber: 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)Iris: 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.Aqueous Humor: 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)Anterior Eye Segment: The front third of the eyeball that includes the structures between the front surface of the cornea and the front of the VITREOUS BODY.Gonioscopy: Examination of the angle of the anterior chamber of the eye with a specialized optical instrument (gonioscope) or a contact prism lens.Glaucoma, Angle-Closure: 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.Intraocular Pressure: The pressure of the fluids in the eye.Trabecular Meshwork: A porelike structure surrounding the entire circumference of the anterior chamber through which aqueous humor circulates to the canal of Schlemm.Cornea: 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)Cataract Extraction: The removal of a cataractous CRYSTALLINE LENS from the eye.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.Iris Diseases: Diseases, dysfunctions, or disorders of or located in the iris.Ciliary Body: 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.Sclera: 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)Biometry: The use of statistical and mathematical methods to analyze biological observations and phenomena.Lens Implantation, Intraocular: 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.Uveitis, Anterior: 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.Hyphema: Bleeding in the anterior chamber of the eye.Microscopy, Acoustic: 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.Lenses, Intraocular: Artificial implanted lenses.Glaucoma: 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)Phacoemulsification: 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)Corneal Edema: An excessive amount of fluid in the cornea due to damage of the epithelium or endothelium causing decreased visual acuity.Fluorophotometry: 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.Endophthalmitis: Suppurative inflammation of the tissues of the internal structures of the eye frequently associated with an infection.Endothelium, Corneal: Single layer of large flattened cells covering the surface of the cornea.Eye Diseases: Diseases affecting the eye.Eye Neoplasms: Tumors or cancer of the EYE.Vitreous Body: 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.Blood-Aqueous Barrier: 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.Iridectomy: Surgical removal of a section of the iris.Lens Subluxation: 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.Lens, Crystalline: 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, Ocular: Refraction of LIGHT effected by the media of the EYE.Uvea: 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)Iritis: Inflammation of the iris characterized by circumcorneal injection, aqueous flare, keratotic precipitates, and constricted and sluggish pupil along with discoloration of the iris.Injections: Introduction of substances into the body using a needle and syringe.Descemet Membrane: 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.Paracentesis: A procedure in which fluid is withdrawn from a body cavity or organ via a trocar and cannula, needle, or other hollow instrument.Axial Length, Eye: The distance between the anterior and posterior poles of the eye, measured either by ULTRASONOGRAPHY or by partial coherence interferometry.Corneal Transplantation: Partial or total replacement of the CORNEA from one human or animal to another.Eye Infections, Parasitic: Mild to severe infections of the eye and its adjacent structures (adnexa) by adult or larval protozoan or metazoan parasites.Refractive Errors: Deviations from the average or standard indices of refraction of the eye through its dioptric or refractive apparatus.Tonometry, Ocular: Measurement of ocular tension (INTRAOCULAR PRESSURE) with a tonometer. (Cline, et al., Dictionary of Visual Science, 4th ed)Eye Enucleation: The surgical removal of the eyeball leaving the eye muscles and remaining orbital contents intact.Ophthalmic Solutions: Sterile solutions that are intended for instillation into the eye. It does not include solutions for cleaning eyeglasses or CONTACT LENS SOLUTIONS.Tomography, Optical Coherence: 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.Viscoelastic Substances: 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.Visual Acuity: 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.Uveitis: 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)Lens DiseasesUveal Diseases: Diseases of the uvea.Myopia: 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.Trabeculectomy: Any surgical procedure for treatment of glaucoma by means of puncture or reshaping of the trabecular meshwork. It includes goniotomy, trabeculectomy, and laser perforation.Corneal Diseases: Diseases of the cornea.Diffusion Chambers, Culture: 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.Pupil: The aperture in the iris through which light passes.Eye Infections, Bacterial: 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.Carcinoma, Brown-PearceOcular Hypotension: Abnormally low intraocular pressure often related to chronic inflammation (uveitis).Laser Therapy: The use of photothermal effects of LASERS to coagulate, incise, vaporize, resect, dissect, or resurface tissue.Hyperopia: 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)Diagnostic Techniques, Ophthalmological: Methods and procedures for the diagnosis of diseases of the eye or of vision disorders.Lens Capsule, Crystalline: 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.Pseudophakia: Presence of an intraocular lens after cataract extraction.Hypersensitivity, Delayed: An increased reactivity to specific antigens mediated not by antibodies but by cells.Corneal Opacity: Disorder occurring in the central or peripheral area of the cornea. The usual degree of transparency becomes relatively opaque.Mydriatics: Agents that dilate the pupil. They may be either sympathomimetics or parasympatholytics.Cataract: 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)Retinitis: 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).Eye Abnormalities: Congenital absence of or defects in structures of the eye; may also be hereditary.Glaucoma, Neovascular: 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.Interferometry: 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).Rabbits: 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.Ocular Hypertension: A condition in which the intraocular pressure is elevated above normal and which may lead to glaucoma.Ocular Physiological Phenomena: Processes and properties of the EYE as a whole or of any of its parts.Corneal Topography: 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.Eye Injuries: Damage or trauma inflicted to the eye by external means. The concept includes both surface injuries and intraocular injuries.Eye Infections, Viral: 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.Sclerostomy: Surgical formation of an external opening in the sclera, primarily in the treatment of glaucoma.Glaucoma, Open-Angle: Glaucoma in which the angle of the anterior chamber is open and the trabecular meshwork does not encroach on the base of the iris.Vitrectomy: 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.Corneal Endothelial Cell Loss: Loss of CORNEAL ENDOTHELIUM usually following intraocular surgery (e.g., cataract surgery) or due to FUCHS' ENDOTHELIAL DYSTROPHY; ANGLE-CLOSURE GLAUCOMA; IRITIS; or aging.Eye Hemorrhage: Intraocular hemorrhage from the vessels of various tissues of the eye.Macaca fascicularis: 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.Pilocarpine: A slowly hydrolyzed muscarinic agonist with no nicotinic effects. Pilocarpine is used as a miotic and in the treatment of glaucoma.Tropicamide: One of the MUSCARINIC ANTAGONISTS with pharmacologic action similar to ATROPINE and used mainly as an ophthalmic parasympatholytic or mydriatic.Ophthalmologic Surgical Procedures: Surgery performed on the eye or any of its parts.Moxisylyte: 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)Atmosphere Exposure Chambers: Experimental devices used in inhalation studies in which a person or animal is either partially or completely immersed in a chemically controlled atmosphere.Photography: Method of making images on a sensitized surface by exposure to light or other radiant energy.Eye Diseases, Hereditary: 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.Iridocyclitis: 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.Capsulorhexis: 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)Miotics: 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.Posterior Eye Segment: 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.Aphakia, Postcataract: Absence of the crystalline lens resulting from cataract extraction.Fluorescein: 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.Cyclopentolate: A parasympatholytic anticholinergic used solely to obtain mydriasis or cycloplegia.Lens Nucleus, Crystalline: The core of the crystalline lens, surrounded by the cortex.Eye Foreign Bodies: Inanimate objects that become enclosed in the eye.Eye Injuries, Penetrating: Deeply perforating or puncturing type intraocular injuries.Pupil Disorders: 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.Keratoplasty, Penetrating: Partial or total replacement of all layers of a central portion of the cornea.Silicone Oils: 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.Fluoresceins: 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.Iris Neoplasms: 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.Microphthalmos: Congenital or developmental anomaly in which the eyeballs are abnormally small.Conjunctiva: The mucous membrane that covers the posterior surface of the eyelids and the anterior pericorneal surface of the eyeball.Keratitis: Inflammation of the cornea.Administration, Topical: 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.Filtering Surgery: 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)Prolapse: The protrusion of an organ or part of an organ into a natural or artificial orifice.Retina: 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.Injections, Intraocular: The administration of substances into the eye with a hypodermic syringe.Corneal Stroma: The lamellated connective tissue constituting the thickest layer of the cornea between the Bowman and Descemet membranes.Accommodation, Ocular: 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)Genetic Determinism: 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.Postoperative Complications: 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.Weights and Measures: Measuring and weighing systems and processes.Ophthalmology: A surgical specialty concerned with the structure and function of the eye and the medical and surgical treatment of its defects and diseases.Dirofilaria repens: A filarial parasite primarily affecting dogs and cats, but causing an emerging zoonosis in humans involving subcutaneous lesions. It is transmitted by MOSQUITOES.Phakic Intraocular Lenses: 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.Retinal Necrosis Syndrome, Acute: Mild to fulminant necrotizing vaso-occlusive retinitis associated with a high incidence of retinal detachment and poor vision outcome.Retinal DiseasesMiosis: Pupillary constriction. This may result from congenital absence of the dilatator pupillary muscle, defective sympathetic innervation, or irritation of the CONJUNCTIVA or CORNEA.Therapeutic Irrigation: The washing of a body cavity or surface by flowing water or solution for therapy or diagnosis.Keratitis, Dendritic: 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)Glaucoma Drainage Implants: Devices, usually incorporating unidirectional valves, which are surgically inserted in the sclera to maintain normal intraocular pressure.Lasers, Solid-State: 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.Administration, Ophthalmic: Application of pharmaceutically active agents on the tissues of the EYE.Eye ProteinsTimolol: 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.Cysts: Any fluid-filled closed cavity or sac that is lined by an EPITHELIUM. Cysts can be of normal, abnormal, non-neoplastic, or neoplastic tissues.Mice, Inbred BALB CChorioretinitis: 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.Retinal Detachment: 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)

*Phacoemulsification

Aspirated fluids are replaced with irrigation of balanced salt solution to maintain the anterior chamber. The term originated ... It is then inserted and placed in the posterior chamber in the capsular bag (in-the-bag implantation). Sometimes, a ciliary ... The surgeon then removes the anterior face of the capsule that contains the lens inside the eye. Phacoemulsification surgery ...

*Anterior chamber of eyeball

The depth of the anterior chamber of the eye varies between 1.5 and 4.0 mm, averaging 3.0 mm. The anterior chamber tends to ... One peculiar feature of the anterior chamber is dampened immune response to allogenic grafts. This is called anterior chamber ... As the anterior chamber depth decreases below 2.5 mm, the risk for angle closure glaucoma increases. Shallow anterior chambers ... This ratio is linearly correlated with the depth of the anterior chamber with the following equation: Anterior chamber depth ( ...

*Gnathostomiasis

P. Barua; N. K. Hazarika; N. Barua; C. K. Barua; B. Choudhury (2007). "Gnathostomiasis of the anterior chamber". Indian Journal ... The posterior portion of the nematode is smooth while the anterior half is covered with fine leaf-like spines. The head is ...

*Lens (anatomy)

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 more flat on its anterior side than on its posterior side. The lens is also known as the aquula (Latin, a little ... 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 ...

*Emmonsia parva

Granulomas also form in the anterior chamber. However purulent conjunctival discharge and hemorrhaging were not observed as ...

*Koh Yasuda

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 ...

*Van Herick technique

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. ... The technique also may be considered of inadequate scope, as it only provides an estimate of the anterior chamber angle (ACA) ... Most of the sources of variability may be simply overcome with the direct measurement of the depth of the anterior chamber ...

*Loa loa filariasis

ISBN 0-7216-2921-0. Osuntokun O, Olurin O (March 1975). "Filarial worm (Loa loa) in the anterior chamber. Report of two cases ...

*Phakic intraocular lens

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 ...

*Iridodialysis

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 ...

*White dot syndromes

MPC is characterized by vitritis and anterior chamber inflammation. Decreased vision due to vitreous inflammation may occur. ...

*Uveitis

Iritis is the inflammation of the anterior chamber and iris. Iridocyclitis presents the same symptoms as iritis, but also ... 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 ... In western countries, anterior uveitis accounts for between 50% and 90% of uveitis cases. In Asian countries the proportion is ...

*Saal Greenstein syndrome

... 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. ...

*Immune privilege

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- ... Investigative Ophthalmology and Visual Science.47:1047-1055 Streilein JW, Stein-Streilein J (2002). "Anterior chamber ...

*Schwalbe's line

ISBN 978-0-323-05714-1. Scheie, Harold G. (1957). "Width and Pigmentation of the Angle of the Anterior Chamber". A.M.A. ...

*Dorzolamide

It causes shallowing of the anterior chamber and leads to transient myopia. Dorzolamide at Drugs.com. Revised: 12/2011 KD ...

*Peter Hersh

Corneal edema and penetrating keratoplasty after anterior chamber phakic intraocular lens implantation. J Cat Refract Surg 2005 ... Anterior Segment Reconstruction Following Ocular Trauma. Int. Ophth. Clin. 1988;28:57-68. Kenyon KR & Hersh PS. Anterior ... Penetrating keratoplasty and anterior segment reconstruction for severe ocular trauma. German Journal of Ophthal. 1994;3:90-99 ... Penetrating Keratoplasty and Anterior Segment Reconstruction for Severe Ocular Trauma. Ophthal. 1992;99:396-402. Hersh PS, ...

*Ciliary body

The aqueous humor then flows through the pupil into the anterior chamber. The ciliary body is attached to the lens by ... The ciliary body is a ring-shaped thickening of tissue inside the eye that divides the posterior chamber from the vitreous body ... ATPase enzyme creating an osmotic gradient for the passage of water into the posterior chamber) and twenty percent is produced ... and these secrete aqueous humor into the posterior chamber. ...

*Canine glaucoma

Gonioscopy is a diagnostic procedure to examine the angle of the anterior chamber. Direct and indirect ophthalmoscopy is ... The flow tube is inserted into the anterior chamber of the eye and the plate is implanted underneath the conjunctiva to allow ... flow of aqueous fluid out of the eye into a chamber called a bleb. The first-generation Molteno and other non-valved implants ...

*Glaucoma surgery

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 ... Non-penetrating filtering surgeries do not penetrate or enter the eye's anterior chamber. There are two types of non- ... allowing subconjunctival filtration without actually entering the anterior chamber; in order to prevent wound adhesion after ...

*Fungal keratitis

The fungus can break through the descemet's membrane and pass into the anterior chamber. The patient presents a few days or ... The fungus grows slowly in the cornea and proliferates to involve the anterior and posterior stromal layers. ... the anterior part of the eye which covers the pupil. Those experiencing these symptoms are typically advised to immediately ...

*Ostariophysi

A smaller anterior chamber is partially or completely covered by a silvery peritoneal tunic. A larger posterior chamber may be ... The fully functioning Weberian apparatus consists of the swim bladder, the Weberian ossicles, a portion of the anterior ... a distinct modification of the anterior four or five first vertebrae is found, as well as the Weberian ossicles. ... The swim bladder is usually divided into two chambers. ...

*Aphakia

It causes a loss of accommodation, far sightedness (hyperopia), and a deep anterior chamber. Complications include detachment ...

*Cataract surgery

After lens removal, an artificial plastic lens (an intraocular lens implant) can be placed in either the anterior chamber or ... in the anterior chamber (in front of the iris), or, less commonly, sutured to the sclera. Retinal detachment is an uncommon ... Viscoelastic injection to stabilize the anterior chamber and to help maintain the eye pressurization; Capsulorhexis; ... Implantation of posterior chamber IOL (PCIOL) in patients below 1 year of age is controversial due to rapid ocular growth at ...

*Behçet's disease

When symptoms are limited to the anterior chamber of the eye prognosis is improved. Posterior involvement, particularly optic ... Ocular involvement can be in the form of posterior uveitis, anterior uveitis, or retinal vasculitis. Anterior uveitis presents ... Yamauchi Y, Cruz JM, Kaplan HJ, Goto H, Sakai J, Usui M (2005). "Suspected simultaneous bilateral anterior ischemic optic ... However, cases of acute optic neuropathy (specifically anterior ischemic optic neuropathy) have also been reported to occur. ...

*Pirate perch

... "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 ...

*Hypopyon

... it seeps into the anterior chamber and settles at the top of the anterior chamber. This is in contrast to hypopyon resulting ... The toxins secreted by the pathogens mediate the outpouring of leukocytes that settle in the anterior chamber of the eye. . An ... Hypopyon is a medical condition involving inflammatory cells in the anterior chamber of the eye. It is a leukocytic exudate, ... It is a sign of inflammation of the anterior uvea and iris, i.e. iritis, which is a form of anterior uveitis. The exudate ...
Purpose: : To utilize Scanning Peripheral Anterior Chamber Depth Analyzer (SPAC) for analyzing anterior chamber depth (ACD) and anterior chamber angle (ACA) changes in five-year follow-up and evaluating factors associated with ACD and ACA changes in glaucoma eyes. Methods: : One hundred and seventy-nine eyes of 179 patients (107 POAG patients and 72 NTG patients) who were followed up for approximately five years from 2003 were recruited. Those subjects with a history of incisional surgery or laser, employing any drugs that may influence the anterior chamber configuration, or secondary types of glaucoma were excluded. The patients underwent a series of ophthalmologic examinations including intraocular pressure measurement (IOP) by Goldmann applanation tonometry, Humphrey static visual filed test, refractive error test, visual acuity test, and general health questionnaire in addition to the ACD, ACA, and central corneal thickness (CCT) measurement by SPAC. Multivariate linear regression was used ...
TY - JOUR. T1 - Ocular disease induced in mice by anterior chamber inoculation of herpes simplex virus. AU - Whittum, J. A.. AU - McCulley, James P. AU - Niederkorn, Jerry Y. AU - Streilein, J. W.. PY - 1984. Y1 - 1984. N2 - Herpes simplex virus type 1 (HSV-1) inoculated directly into the anterior chamber of the mouse eye induced an acute inflammatory process in both the injected eye and its uninjected (contralateral) counterpart. In the former, a rapid intense inflammatory reaction developed in the anterior segment (cornea, anterior chamber) and anterior portion of the uveal tract (iris and ciliary body). The retina of the injected eye was spared. In contrast, in the uninjected eyes, a delayed massive destructive reaction also developed, but was limited almost exclusively to the posterior segment (vitreous, retina and choroid); retinas of the uninjected eyes were destroyed completely. When HSV-1 was inoculated bilaterally into both anterior chambers, destructive inflammatory responses developed ...
Purpose: While White Leghorn chicken (Gallus gallus domesticus) have been used to study physiological optical properties of the eye and conditions such as myopia, there is a lack of in vivo studies that look at the potential of chicken as a model of ocular hypertension or glaucoma. When advanced imaging techniques are to be used in such models, chicken have an advantage over rodents, having bigger eyes with less optical aberrations. The induction of elevated IOP in chicken via anterior chamber injections of microbeads has thus been investigated.. Methods: Animals of both genders and varying ages (n=15:12-124 days old) were subject to one of 12 combinations of anterior chamber injections of microbeads: magnetic (4.5 µm) or non-magnetic (12 µm) in one or both eyes with saline as a control. Intraocular pressure (IOP) was monitored frequently before and after injections with Tonopen. In 4 out of the 17 animals A-scan ultrasound was used to measure ocular parameters including anterior chamber depth ...
Would you have Narrow anterior chamber angle when you have Vomiting in pregnancy? We study people who have Narrow anterior chamber angle and Vomiting in pregnancy from FDA. Check out who they are, other conditions they have and drugs they take
We evaluated cardiac muscle development in the absence of hemodynamic work load but in the presence of host factors including blood vessels, nerves, and circulating neurohumoral agents by transplanting 12-day fetal rat ventricle into the anterior eye chamber of adult host rats. Implants were studied by electron microscopy at intervals from 1 to 14 weeks in oculo. For comparison with myocardium developing in oculo, 12-day fetal tissue and 3-, 8-, and 28-day-old normally growing rats were also studied. At 1 week in oculo, myofibrils were laterally located and more frequent than in the 12-day fetus. Fibrils had clear Z bands and H bands, but no M bands. At 10 days in oculo (comparable to birth in normally growing animals), myocyte mitoses were present and tritiated thymidine autoradiography revealed many labeled myocyte nuclei. By 5 weeks in oculo, cells were filled with mature myofibrils with clear M bands and lateral connections between adjacent Z bands. However, myofibril bundles sometimes ...
Synonyms for Anterior chamber in Free Thesaurus. Antonyms for Anterior chamber. 18 synonyms for chamber: hall, room, council, assembly, legislature, legislative body, room, bedroom, apartment, enclosure, cubicle, compartment, hollow, cavity. What are synonyms for Anterior chamber?
Free problem shallow anterior chamber of the eye article - L - problem shallow anterior chamber of the eye information at EzineSeeker.com
The administration of antigens into the anterior chamber (AC) of the eye induces a special form of antigen-specific peripheral immune tolerance termed AC-associated immune deviation (ACAID), which prevents delayed-type hypersensitivity (DTH) responses and other inflammatory responses. Type-II collagen (CII) is highly expressed in cartilage tissues and has been linked to Rheumatoid arthritis, aging, and osteoarthritis. To explore the potential for ACAID induction via CII, we checked for different signs of ACAID generation following the AC injection of CII in BALB/c mice. We hypothesized that the mechanism of ACAID induction involves efferent T regulatory cells (Tregs). Both local adoptive transfer (LAT) assays and DTH assays were performed. Results indicated that ACAID induction was driven by the AC injection of CII. Spleen cells of mice injected with CII in the AC significantly suppressed DTH responses. ACAID induction was mediated by efferent Tregs in the spleen. CII-mediated ACAID induction ...
Parameters obtained by Pentacam showed the following: The mean increase in anterior chamber volume (ACV) was 55.64 +/- 18.47 mm3. The mean increase in internal anterior chamber depth (ACD) was 2.06 +/- 0.37 mm. There was a significant correlation (p < 0.001) between ACD calculated using pentacam before surgery and Gonioscopic grading for both temporal, and nasal quadrants. Parameters measured by AS-OCT before and 3 months after surgery showed statistically significant increase in all parameters including angles in degrees with mean increase of 21.3 +/- 3.6 for nasal quadrant and 22.08 +/- 4.5 for temporal quadrant , angle opening distance 500 (AOD500) showed mean increase of 272 +/- 47 um for nasal and 279 +/- 65 um for temporal, and trabecular iris space area 500(TISA500) also showed mean increase of 0.058 +/- 0.093 mm2 for nasal and 0.083 +/- 0.023 mm2 for temporal quadrant. Preoperative nasal ACA, AOD500 and TISA500 using AS-OCT showed significant correlation with nasal gonioscopic grading. ...
Beneath the tear film is the cornea, which provides a clear stable structure for the passage of light. The rounded shape of the cornea causes the light rays to bend as they pass through to the anterior chamber. If the cornea is misshapen or becomes cloudy and cannot allow enough light to pass through, then vision is severely hampered.. The anterior chamber is a space between the cornea and the iris (colored part of the eye). It contains fluids that bathe the structures in the front (anterior) part of the eye. If the anterior chamber is too shallow, the iris can move forward and touch the back of the cornea. This abnormal relationship changes the anterior chamber angle (where the cornea and iris meet) and impedes the flow of fluids between the anterior chamber (via the trabecular meshwork in the angle) and the anterior structures. If the fluid cannot enter and exit freely through the trabecular meshwork in the angle, pressure builds up in the eye and glaucoma develops.. In the center of the iris ...
As the damage increases on this central visual nerve, blind spots emerge in your visual field. The reason behind the nerve deterioration is high eye pressure.. The pressure is from increased aqueous humor that draws to your anterior eye chamber. The process takes place via the tissue where cornea and iris meet. Any form of system failure or overproduction of the fluid leads to pressure buildup.. In addition, there are cases where Glaucoma affects families.. This is due to certain gene conditions that are inherited in the family.. There are various types of Glaucoma that include:. • Open Glaucoma, which is common, compared to other conditions.. • Angle-closure Glaucoma or closed-angle Glaucoma. • Children Glaucoma. • Normal-tension Glaucoma. • Pigmentary Glaucoma. ...
As the damage increases on this central visual nerve, blind spots emerge in your visual field. The reason behind the nerve deterioration is high eye pressure.. The pressure is from increased aqueous humor that draws to your anterior eye chamber. The process takes place via the tissue where cornea and iris meet. Any form of system failure or overproduction of the fluid leads to pressure buildup.. In addition, there are cases where Glaucoma affects families.. This is due to certain gene conditions that are inherited in the family.. There are various types of Glaucoma that include:. • Open Glaucoma, which is common, compared to other conditions.. • Angle-closure Glaucoma or closed-angle Glaucoma. • Children Glaucoma. • Normal-tension Glaucoma. • Pigmentary Glaucoma. ...
A diet containing high levels of saturated fat and cholesterol is detrimental to many aspects of health and is known to lead to obesity, metabolic syndrome, heart disease, diabetes, and cancer. However, the effects of a diet rich in saturated fat and cholesterol on the brain are not currently well understood. In order to determine direct effects of a high saturated fat and cholesterol diet upon fetal hippocampal tissue, we transplanted hippocampal grafts from embryonic day 18 rats to the anterior eye chamber of 16-month-old host animals that were fed either a normal rat chow diet or a 10% hydrogenated coconut oil + 2% cholesterol diet (HFHC diet) for 8 weeks. One eye per rat received topical application of an IL-1 receptor antagonist (IL-1Ra, Kineret®) and the other served as a saline control. Results revealed that the HFHC diet led to a marked reduction in hippocampal transplant growth, and detrimental effects of the diet were alleviated by the IL-1 receptor antagonist IL-1Ra. Graft morphology ...
Here we have our first gonioscopy-assisted transluminal trabeculotomy (GATT) at the University of Iowa. Here we are making an oblique paracentesis directed toward the nasal angle. This is followed by intracameral injection of Miostat to bring down the pupil along with viscoelastic to deepen the chamber and expose the angle structures. We use a ring stabilizer with a 2.2mm diamond keratome to make a temporal incision. Then the patients head is rotated away from the surgeon to allow gonioscopic visualization of the angle structures. Here we use that gonioprism to visualize the angle structures. Next, we use a 20 gauge MVR blade to approach the nasal angle. We enter first with the MVR blade before placing the gonioprism to ensure the proper trajectory. We then carry this across and focus on the nasal angle structures. We use the MVR blade to create a 1-2 clock hour goniotomy nasally. You can see that there is a good reflux of blood during this step through Schlemms canal, indicating that we have ...
A three-dimensional image is derived from two-dimensional images. At least one of the two-dimensional images has a predetermined number of pixels. Depth measurements are derived from the two-dimensional images. The number of derived depth measurements is substantially equal to the predetermined number of pixels. The three-dimensional image is derived from the two-dimensional digital images and the depth measurements.
Purpose: To quantify the effects of cataract surgery on the anterior chamber topography in patients with angleclosure glaucoma (PACG), open-angle glaucoma (POAG) and pati..
An irrigation tube that has a relatively high fluidic resistance. The high resistance can be created by providing a relatively long tube. The aspiration tube and an irrigation tube may be coupled to an anterior chamber of a cornea during a phaco procedure. The high resistance of the tube will minimize the instantaneous change of flowrate out of the cornea in the event an occlusion is cleared from the aspiration tube. Minimizing the change in flowrate will tend to insure a higher flowrate from the irrigation line and a positive pressure within the cornea. The aspiration tube may have a plurality of pre-formed coils to minimize the effective length of the tube.
A bifocal lens implanted in the anterior chamber of the eye having an air space in the upper lens edge to position the lens at the upper edge of the pupil in dilated and constricted state.
Methods of treating glaucoma are described including treatment of an eye with a liquid jet. The liquid jet can be generated by a laser-induced liquid jet instrument which is inserted through an incision in an eye. A stent can also be used, the stent having an inflow portion that is in fluid communication with an outflow portion. The stent can be inserted into the eye and transported from the incision through the anterior chamber of the eye toward the trabecular meshwork of the eye. In some embodiments, the stent can be advanced through the anterior chamber of the eye and provide fluid communication between the anterior chamber and Schlemms canal. The method includes infusing fluid into an aqueous cavity and increasing the pressure of the fluid within the aqueous cavity.
The simplest method of assessing ACD is,by shining a pen torch into the patients eye from the temporal canthus such that the pen torch lies in the same plane as the eye. In the case of a deep anterior chamber, the iris lies flat and the whole,iris will be illuminated. In the case of a very shallow anterior chamber the iris lies forward, blocking some of the light and very little of the iris is illuminated.Based on the amount of eye illuminated the ACD can be graded ...
The front part of the eye is filled with a clear fluid called aqueous humor. This fluid is always being made behind the colored part of the eye (the iris). It leaves the eye through channels in the front of the eye in an area called the anterior chamber angle, or simply the angle. Anything that slows or blocks the flow of this fluid out of the eye will cause pressure to build up in the eye. This pressure is called intraocular pressure (IOP). In most cases of glaucoma, this pressure is high and causes damage to the optic nerve. Open-angle (chronic) glaucoma is the most common type of glaucoma. ...
Vitreous space: This chamber occupies the space behind the lens to the retina. It is filled with a gelatinous substance called the vitreous body. Sclera: This a fibrous protective covering of the eyeball that is seen as the white of the eye. It is made mostly of the structural protein collagen. Cornea: Transparent, colorless anterior one sixth of the covering of the eyeball. The cornea consists of 5 layers with the outer one being a layer of epithelium composed of 5-6 layers of cells that turnover every 7 days or so. This layer and the internal endothelium are responsible for keeping the cornea transparent. They do this by keeping the middle layers relatively dehydrated which keeps the parallel collagen fibers present there from being opaque. The cornea contains no blood vessels and gets its nutrients from those in the anterior chamber fluid and surrounding vessels. Schlemms canal: This canal drains fluid from the anterior chamber. Obstruction of this canal leads to an increased intraocular ...
A device for use in a surgical procedure on an eye of a living being, includes a retraction member, destined for insertion into the anterior chamber of the eye. The retraction member has a hook-shaped engagement part for retracting the iris, whereby at least the engagement part of the retraction member is made of a deformable material with shape memory. Thus, the retraction member is insertable into the anterior chamber with the engagement part exhibiting a substantially straight configuration, and subsequently the engagement part is able to recover its original hook-shaped configuration as a consequence of its material characteristics.
Oculo and tamiflu - Secure Payments. Check Quality Every Order!. Delivery to Your Home - from 3 to 14 Days. We deliver orders to 120 Countries.
I used Klonk Image Measurement as a solution to measure poly lines in the roots of (Arabidopsis thaliana) plants for a stress experiment where different things like salt were introduced and the growth was recorded ect. They grown vertically in an agarose gel medium in a petri dish and I needed a depth measurement and looked for something more precise than a standard linear metric ruler. I was able to scan the petri dishes with the plants sealed inside for an accurate measurement while maintaining a sterile environment, over the entire growth cycle open the image in Klonk, then measure at my convenience. Then that data was plugged into excel and graphed for comparison to the control for growth of the roots. I was working as an intern volunteer for a genetics research lab at University of New Mexico, (with PhD Olga Pontes team), small interfering RNA (siRNA) directing DNA methylation, (switching sections of the DNA on and off) relating to cancer research in animals and drought resistant ...
The laser triangulation probe conveniently obtains surface topography data of a measured target. However, compared to the touch probe, its reliability and accuracy can be negatively affected by various factors associated with the object being measured and the probe itself. In this paper, to identify potential compensation strategies to improve the accuracy of depth measurement for laser triangulation probe, the measuring errors caused by an oil film on the measured surface, and the probe’s position and orientation parameters with respect to the measuring object (including scan depth, incident angle, and azimuth angle), were studied. A theoretical model based on the geometrical optics, and an empirical model from the error evaluations, were established to quantitatively characterize the error influence of oil film and probe’s parameters, respectively. We also investigated the influence pattern of different filtering methods with several comparison experiments. The verification procedures,
Echo sounding is the technique of using sound pulses to find the depth of water. The interval from the emission of a pulse to reception of its echo is recorded, and the depth calculated from the known speed of propagation of sound through water. This information is then typically used for navigation purposes or in order to obtain depths for charting purposes. Echo sounding can also refer to hydroacoustic "echo sounders" defined as active sound in water (sonar) used to study fish. Hydroacoustic assessments have traditionally employed mobile surveys from boats to evaluate fish biomass and spatial distributions. Conversely, fixed-location techniques use stationary transducers to monitor passing fish. The word sounding is used for all types of depth measurements, including those that dont use sound, and is unrelated in origin to the word sound in the sense of noise or tones. Echo sounding is a more rapid method of measuring depth than the previous technique of lowering a sounding line until it ...
Ivan Bozovic of Brookhaven (and Yale) gave a very compelling talk about high temperature superconductors, specifically LSCO, based on having grown thousands of extremely high quality (as assessed by the width of the transition in penetration depth measurements) epitaxial films of varying doping concentrations. Often people assert that the cuprates, when "overdoped", basically become more conventional BCS superconductors with a Fermi liquid normal state. Bozovic presents very convincing evidence (from pretty much the data alone, without complex models for interpretation) that shows this is not right - that instead these materials are weird even in the overdoped regime, with systematic property variations that dont look much like conventional superconductors at all. In the second part of his talk, he showed clear transport evidence for electronic anisotropy in the normal state of LSCO over the phase diagram, with preferred axes in the plane that vary with temperature and dont necessarily align ...
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Alibaba.com offers 675 transfer chamber products. About 2% of these are testing equipment, 1% are filter press equipment, and 1% are cold room. A wide variety of transfer chamber options are available to you, such as universal testing machine, process testing machine, and auto testing machine.
An external fluid warming device is described that includes a fluid warming chamber and an air separation chamber. The fluid warming chamber has a fluid inlet that communicates with a fluid pathway. T
SCHAFTENAAR, E et al. Anterior chamber paracentesis to improve diagnosis and treatment of infectious uveitis in South Africa. SAMJ, S. Afr. med. j. [online]. 2015, vol.105, n.8, pp.628-630. ISSN 2078-5135. http://dx.doi.org/10.7196/SAMJNEW.7816.. Infectious uveitis is a significant cause of blindness in South Africa, especially among HIV-infected individuals. The visual outcome of uveitis depends on early clinical and laboratory diagnosis to guide therapeutic intervention. Analyses of aqueous humor obtained by anterior chamber paracentesis direct the differential diagnosis in infectious uveitis. However, although safe and potentially cost-effective, diagnostic anterior chamber paracentesis is not common practice in ophthalmic care across Africa. We draw attention to this important procedure, which could improve the diagnosis and prognosis of infectious uveitis.. ...
SCHAFTENAAR, E et al. Anterior chamber paracentesis to improve diagnosis and treatment of infectious uveitis in South Africa. SAMJ, S. Afr. med. j. [online]. 2015, vol.105, n.8, pp.628-630. ISSN 2078-5135. http://dx.doi.org/10.7196/SAMJNEW.7816.. Infectious uveitis is a significant cause of blindness in South Africa, especially among HIV-infected individuals. The visual outcome of uveitis depends on early clinical and laboratory diagnosis to guide therapeutic intervention. Analyses of aqueous humor obtained by anterior chamber paracentesis direct the differential diagnosis in infectious uveitis. However, although safe and potentially cost-effective, diagnostic anterior chamber paracentesis is not common practice in ophthalmic care across Africa. We draw attention to this important procedure, which could improve the diagnosis and prognosis of infectious uveitis.. ...
Methods 60 Chinese and 60 Caucasians, 30 with open angles and 30 with narrow angles (defined as Shaffer grade ≤2 in ≥3 quadrants during dark room gonioscopy) in each group, were consecutively enrolled. One eye of each subject was randomly selected for imaging in a completely darkened room. Measurements, including anterior chamber depth (ACD), scleral spur-to-scleral spur distance (anterior chamber width (ACW)), anterior chamber angle width, iris convexity and iris thickness, were compared between the groups. The associations between angle opening distance and biometric measurements were evaluated with univariate and multivariate regression analyses. ...
CHAPTER 6. DIAGNOSES OF THE ANTERIOR CHAMBER ANGLE STRUCTURES, AND CILIARY BODY (95 pages) Description: A comprehensive discussion of the primary care diagnosis, management and follow-up of all the major conditions of the anterior chamber, angle structures and ciliary body. Each condition is covered with background information and the SOAP (subjective, objective, assessment and plan) examination approach. Course Outline: Anterior Chamber and Aqueous Humor Review of Clinical Anatomy I. Background Information on Uveitis A. Definition B. Classification C. Incidence and Prevalence of Uveitis (How Much?) D. Epidemiology and Demography (Who, When, and Where?) E. Etiology II. Primary Care of Acute Anterior Uveitis A. Subjective B. Objective C. Assessment D. Plan E. Follow-u III. Chronic Anterior Uveitis A. General Considerations B. Clinical Medicine C. Specific Diseases 1. Ankylosing Spondylitis 2. Behcet\s Syndrome 3. Crohn\s Disease (Regional Enteritis) 4. Fuch\s Heterochomic
Twenty-eight fresh donor eyes (Georgia Lions Eye Bank) ranging in age from four months to 87 years were used for an in vitro study to determine the feasibility of obtaining accurate anterior chamber diameter measurements with our Scheimpflug ultraviolet-visible slitlamp densitography apparatus. The in vivo study was performed on 16 hybrid monkeys (of varying age). These data were within 0.1 mm of measurements obtained with a modified paracentesis needle specially designed to obtain such measurements. The results of the foregoing study demonstrate that the Scheimpflug slitlamp photographic analyses can provide an accurate measurement of the anterior chamber diameter without entering the globe surgically. This will enable the surgeon to determine the diameter and order an anterior chamber IOL of a specified size prior to surgery. The authors have devised an automated program to analyze the negatives and provide direct anterior chamber diameter measurements. ...
Abstract: Purpose: To compare the accuracy of the Hoffer Q and Haigis formulae according to the anterior chamber depth (ACD) in cases of short axial length (AL).Design: Retrospective cross-sectional studyMethods: A total of 75 eyes from 75 patients with an AL of less than 22.0 mm implanted with an Acrysof IQ intraocular lens (IOL) were enrolled. The median absolute errors (MedAEs) predicted by the Hoffer Q and Haigis formulae were compared. The correlations between ACD and the predicted refractive error calculated using the two formulae were analyzed.Results: There were no significant differences in the MedAEs predicted by the Hoffer Q (Read more...) Full Story →. ...
Patients were followed for a mean period of 13.1+/-6.2 months and 12.8+/-5.7 months in the AI and PI group, respectively. Success rates were similar at last follow-up visit: 15 eyes (83.3%) versus 16 eyes (88.2%) for anterior chamber and pars plana implants, respectively. However, eyes in the anterior chamber group had a significantly higher mean IOP (13.3+/-4.5 vs. 17.5+/-5.9 mmHg, P , 0.05, t test) and more antiglaucoma medications (1.9+/-0.8 vs. 1.2+/-0.6 medications, P , 0.05, Mann-Whitney test) than eyes in the pars plana group. There were more complications in the anterior chamber group; however, they did not reach stastistical significance.. ...
The longer the mean axial length in both eyes, the greater the differences in axial length, mean keratometry, anterior chamber depth, and corneal astigmatism in both eyes. This outcome is assumed to be attributable to the difference in axial length. It was observed that the longer the axial length in one eye, the deeper the anterior chamber depth, and the flatter the mean keratometry value, the greater the corneal astigmatism. The anterior chamber depth was shallower and the mean keratometry value increased with increasing age, whereas corneal astigmatism tended to decrease until the patients were in their sixth decade, but increased afterward ...
Results Asymmetry of axial length, corneal power, vitreous chamber depth, anterior chamber depth, lens thickness and lens power were significantly more among participants who were anisometropic than those who were non-anisometropic. The correlation of anisometropia with axial length asymmetry was 0.735, 0.273 with corneal power, 0.183 with anterior chamber depth and 0.311 with lens power (p,0.001). In a multiple linear regression model, anisometropia was found to have significant associations with axial length asymmetry (standard coefficient (SC)=0.905), corneal power asymmetry (SC=0.350), lens power asymmetry (SC=0.454), nuclear opacity asymmetry (SC=0.074) and age (SC=0.28) (R2=85.1%). According to the linear regression model, corneal power had the strongest association with anisoastigmatism.. ...
The increasing incidence of aciclovir- (ACV) resistant strains in patients with ocular herpes simplex virus (HSV) infections is a major health problem in industrialized countries. In the present study, the humanized monoclonal antibody (mAb) hu2c targeting the HSV-1/2 glycoprotein B was examined for its efficacy towards ACV-resistant infections of the eye in the mouse model of acute retinal necrosis (ARN). BALB/c mice were infected by microinjection of an ACV-resistant clinical isolate into the anterior eye chamber to induce ARN and systemically treated with mAb hu2c at 24h prior (pre-exposure prophylaxis) or at 24, 40, and 56h after infection (post-exposure immunotherapy ...
Manufacturer, Exporter, Supplier & Trading Company of Anterior Chamber Maintainer in Delhi, India. You can easily buy anterior chamber maintainer online.
Figure 1: Effect of Reformation of the Anterior Chamber by Air or by a Balanced Salt Solution (BSS) on Corneal Endothelium after Phacoemulsification: A Comparative Study
The aqueous humor (AH) flow in the anterior chamber (AC) due to saccadic movements is investigated in this research. The continuity, Navier-Stokes and energy equations in 3D and unsteady forms are solved numerically and the saccadic motion was modeled by the dynamic mesh technique. Firstly, the numerical model was validated for the saccadic movement of a spherical cavity with analytic solutions and experimental data where excellent agreement was observed. Then, two types of periodic and realistic saccadic motions of the AC are simulated, whereby the flow field is computed for various saccade amplitudes and the results are reported for different times. The results show that the acting shear stress on the corneal endothelial cells from AH due to saccadic movements is much higher than that due to normal AH flow by buoyancy induced due to temperature gradient. This shear stress is higher on the central region of the cornea. The results also depict that eye saccade imposes a 3D complicated flow field ...
Purpose: To report dislocation of dexamethasone implant (Ozurdex®) into the anterior chamber and to discuss intervention options. Design: Interventional case report. Methods: An 89-year-old woman presented after Ozurdex® implant injection for c
Background: To determine the normative data for lens thickness and its associated factors in a population-based study.. Design: Population-based study.. Participants: The Central India Eye and Medical Study included 4711 subjects (aged 30+ years).. Methods: The subjects underwent a detailed ophthalmological examination including measurement of the lens thickness by sonography.. Main Outcome Measure: Sonographic lens thickness measurement.. Results: After excluding pseudophakic or aphakic eyes, lens thickness measurements were available for 9046 eyes of 4610 (97.9%) subjects with a mean age of 49.1 ± 13.2 years (range: 30-100 years) and a mean refractive error of −0.11 ± 1.77 dioptres (median, 0 dioptres; range, −21.75 to +7.75 dioptres). Mean lens thickness was 3.95 ± 0.49 mm. In multivariate analysis, a thick lens was significantly associated with higher age (P , 0.001), male gender (P , 0.001), higher body stature (P = 0.02), higher body mass index (P = 0.003), thicker central cornea (P ...
The swim bladder of bony fish is evolutionary homologous to the lung (Zheng et al., 2011). The teleost swim bladder is a gas-filled structure that consists of two chambers, the posterior and anterior chamber. In zebrafish, the posterior chamber inflates around 96 h post fertilization (hpf) which is 2 days post hatch, and the anterior chamber inflates around 21 dpf. In fathead minnow, the posterior and anterior chamber inflate around 6 and 14 dpf respectively. The posterior chamber is formed from a bud originating from the foregut endoderm (Winata et al., 2009). The posterior chamber operates as a hydrostatic organ. The volume of gas in the adult swim bladder is continuously adjusted to regulate body density and buoyancy. Many amphibians and frogs go through an embryo-larval transition phase marking the switch from endogenous feeding (from the yolk) to exogenous feeding. In zebrafish, embryonic-to-larval transition takes place around 96 hours post fertilization (hpf). As in amphibians, the ...
Caprogel Overview Caprogel is a topical gel formulation of amniocaproic acid for the treatment of hyphema. In May 2002, we acquired worldwide marketing rights for Caprogel under a license agreement with Eastern Virginia Medical School. Hyphema Hyphema is a term used to describe bleeding in the anterior chamber, the space between the cornea and the iris, of the eye. It occurs when blood vessels in the iris bleed and leak into the clear aqueous fluid and typically results from trauma to the eye. Hyphemas are usually characterized by pooling of blood in the anterior chamber that may be visible to the naked eye. Some of the symptoms of hyphema are decreased vision, depending on the amount of blood in the eye, pooling of blood in the anterior chamber and elevated intraocular pressure. The treatment is dependent on the cause and severity of the hyphema. Frequently, the blood is reabsorbed over a period of days to weeks. During this time, the doctor will carefully monitor the intraocular pressure for ...
143 eyes of 83 patients who scheduled to undergo cataract surgery were measured to evaluate the axial length (AL), anterior chamber depth (ACD), and anterior corneal radius of curvature (Rav) with three devices. Central corneal thickness and lens thickness measured with two SS-OCT based optical biometry were also compared. SRK/T formulas were used to calculate intraocular lens (IOL) power. The agreement was analyzed by the Bland-Altman method. Difference between predicted refractive error and postoperative refractive error were calculated for evaluating accuracy of predicted refraction error of each biometer ...
The GATT procedure can be performed under either topical or intracameral anesthesia or retrobulbar block anesthesia from a temporal approach. Next, a paracentesis site is created either superiorly or inferiorly with its vector directed toward the nasal angle. Intracameral preservative-free lidocaine is injected into the anterior chamber, followed by a miotic agent and viscoelastic material. A temporal clear corneal wound of sufficient size is created, depending on whether or not GATT will be combined with cataract surgery. Next, the microscope and goniolens are oriented to maximize visualization of the nasal angle.. Then, a 1- to 2-clock hour goniotomy is created at the nasal angle via the temporal clear corneal incision (Figure 1). Additional viscoelastic can be used to gape the lips of the cut trabecular meshwork and to expose Schlemm canal.. Either a blunted suture or a microcatheter (iTrack microcatheter; Ellex) is introduced through the paracentesis and retrieved intracamerally with ...
Description: 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 ...
Introduction: The purpose was to investigate the clinical and tonometric alterations in glaucomatous dogs treated with intravitreal uveal ablation. Material and Methods: It was evaluated 13 canine eyes of dogs who were examined on the Ophthalmology Service of Veterinary Hospital in the University of Veterinary Medicine and Animal Science-UNESP-Botucatu, presenting unilateral chronic glaucoma with irreversible blindness. After general anesthesia, the sick eyes of the dogs was submitted to intravitreal uveal ablation, through vitreous chamber injection of 0,5ml of gentamicin sulfate solution (40mg/ml) associated with 0,3ml of dexamethasone dissodic phosphate (4mg/ml). All dogs were evaluated across scores varying of 0 to 3, indicating absent, discreet, moderate and intense, respectively, to evaluation of following clinical signs: secretion, conjunctival hiperemy, corneal edema, quemosis, blepharospasms, hifema, neovascularization, pigmentation and pannus. Scores varying of 0 to 2, indicating ...
Complications related to the injection procedure of Ozurdex® were particularly misplacements of the implant. In one case, the implant was stuck in the sclera due to early retraction of the needle while injecting. One eye was treated twice by mistake. Post-injectional displacement of the implant was noted under certain risk conditions. Patients after complicated cataract surgery or with special lenses (e.g. iris- or scleral-fixated intraocular lens), an iris defect or vitrectomized pseudophakic patients had a risk for migration of the implant into the anterior chamber (6 cases), with secondary corneal decompensation or resulting in pseudohypopion (2 cases). One patient with an artificial iris and a scleral fixated lens presented with the implant in the posterior chamber and another time in the iridocorneal angle. In one case, the implant split into two parts. One fragment migrated into the anterior chamber, while the other fragment remained in the vitreous. One case with endophthalmitis and four ...
Anterior Chamber, Fluid-filled space inside the eye that is located between the iris and the innermost corneal surface (endothelium).. Choroid, Vascular (major blood vessel) layer of the eye lying between the retina and the sclera. The choroid provides nourishment to outer layers of the retina.. Ciliary Muscle, is a ring of smooth muscle in the eyes vascular layer that controls viewing objects at varying distances and regulates the flow of aqueous humour into Schlemms canal.. Cornea, front part of the eye that is transparent and covers the iris, pupil, and anterior chamber and provides most of an eyes optical power.. Fovea, pit in the central part of the macula that produces sharp vision.. Hyaloid Canal,is a small transparent canal running through the vitreous body from the optic nerve disc to the lens that facilitate changes in the volume of the lens.. Iris, is the circular structure in the eye, responsible for controlling the diameter and size of the pupil and the amount of light reaching ...
of 12,6 mm , Ø of the anterior chamber is 3,1 mm, Ø of the posterior chamber is 17,7 mm , Thickness of anterior chamber bag is 0,15 mm , Lens: Ø = 12,60 mm, H = 3,6mm, , Realistic feel of an incision , Realistic vitreous , Suitable for stainless steel or diamond knives and other instruments , Dimensions: Ø 29,2 mm x H 27,20 mm. One package contains 12 eyes. All products are handmade and so may vary in design and colour. If interested and for more information, contact us here.. ...
Cohorts of GpnmbR150X/GpnmbR150X Tyrp1b/Tyrp1b mice were aged and analyzed by slit-lamp examination; representative eyes of indicated ages are shown. Each row contains three images of the same eye. The left column shows a broad-beam illumination. The middle column shows transillumination defects. The right column shows the relative dimensions of the anterior chamber. A-C: Until 5 months, double homozygous mutant mouse eyes were indistinguishable from wild type eyes, with a complex iris morphology, not transillumination, and anterior chambers of normal dimension with a closely juxtaposed cornea and iris. D-F: By 6 months, all mutant mouse eyes exhibit a clear phenotype characterized by slight swelling of peripupillary tissue. G-I: In 9 month old eyes, the peripupillary region becomes notably atrophic, transillumination is obvious, and dispersed pigment is present on both the lens and cornea. Beyond this age, a steadily worsening course ensues, which at (J-L) 12 months, (M-O) 14 months, and (P-R) ...
The cornea is the transparent front part of the eye that covers the iris, pupil, and anterior chamber. In humans, the cornea contributes most of the eyes focusing power, its focus is fixed. Cornea, refracts light with the anterior chamber and lens, with the cornea accounting for approximately two-thirds of the eyes total optical power.
If you view the canine eye as similar to a camera you will be able to understand how the organ works. The light will initially pass through the cornea and then through the pupil (the black circle at the centre of the eye - in dogs the pupil is normally brown). The amount of light that is allowed to travel through is controlled by the iris - as the light passes through the size of the pupil will change depending on how much light is allowed through. The light that passes through is then converted by the retina into a nerve signal that will be passed to the brain. However, just before the light is passed through to the brain (as a nerve impulse) the light rays are focused by your dogs lens which is behind the cornea. Just behind the cornea and in front of the lens is an area referred to the anterior chamber. The anterior chamber is filled with a liquid that is produced and drains through another part of the eye referred to as the drainage angle (this is on both sides of the eye) and makes sure ...
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Diagnosis Code H21.319 information, including descriptions, synonyms, code edits, diagnostic related groups, ICD-9 conversion and references to the diseases index.
Introduction 00:00. Forming the Anterior Chamber 01:31. Making a stab incision in a flat anterior chamber 03:04. Placing the first suture in a corneal laceration 11:18. Placing additional sutures 19:56. Use this link if video fails to load or for larger view. ...
Anterior eye research activities at Aston, including current projects and recent publications in the field of contact lenses, intraocular lenses, ocular biometry and imaging, and accommodation.
An apparatus includes a chamber insert capable of being received by a sample chamber of a conditioning system. The received chamber insert reduces the volume of the sample chamber and defines a cavity
The concept of mechanical barrier was proposed to explain the lack of immune response in organs such as the brain, cornea, testicles and kidneys. We refer to these tissues as immune privileged sites where an immune response represents a dangerous condition for the tissue. Immune privilege sites are also organs or tissues of the body which, when grafted to conventional (nonprivileged) body sites, experience extended or indefinite survival. Whereas foreign grafts placed at nonprivileged sites are rejected promptly. The pregnant uterus is an example of an immune privilege site.. The first reasonable explanation of immune privilege was proposed by Peter Medawar in the late 1940s.3 Medawar proposed that organs such as the anterior chamber of the eye and the brain resided behind blood:tissue barriers. The existence of a mechanical barrier, (in the brain the blood brain barrier [BBB]), prevents the movement of immune cells in and out of the tissue.4 This barrier created a state of immunologic ...
A model human eye is disclosed. The model human eye comprises a extended hemispherical-shaped assembly comprising a center point, an open end defined by a first continuous distal end, a cornea portion symmetrically disposed around the center point, and a sclera portion disposed between the cornea portion and the first continuous distal end. The extended hemispherical-shaped assembly comprises an integral molding. The model human eye further comprises a lenticular bag disposed within the extended hemispherical-shaped assembly. The model human eye further comprises a base comprising a bottom and one or more walls attached to that bottom and extending outwardly therefrom, where the one or more walls comprise a second continuous distal end. The first continuous distal end is attached to the second continuous distal end to define an enclosed space. The lenticular bag separates the enclosed space into an anterior chamber and a posterior chamber.
The Geuder 25-gauge instrument set for intraocular suturing has been developed by Prof Dr Lars-Olof Hattenbach of Ludwigshafen and Geuder. “The new instrument set consists of a 25-gauge micro needle holder and a 25-gauge tying forceps,†said a company spokeswoman. “The hybrid instrument series for the first time facilitates stitching within the anterior chamber via a paracentesis and it is not necessary any longer to have to insert and remove long needles in an uncomfortable way,†she said. www.geuder.com ...
Axial section through an eye of 25 weeks fetus.C = cornea; AC = anterior chamber; PC = posterior chamber; L = lens; M = macula; HV = hyaloid vessels; CB = ciliary bodies. ...
Since its introduction in 2002, the OCULUS Pentacam® has proven itself indispensable and has come to represent the Gold Standard worldwide. Heres why: Contact-free Pentacam® measurement provides the basis for precise and reliable diagnostics and successful treatment of the anterior segment.. ...
The adenocarcinoma which commonly occurs in the kidney of leopard frogs has been transplanted into the anterior chamber of the eye where its growth characteristics have been studied by direct observation with the slit-lamp microscope. Such observations have been amplified by photographs taken at intervals to furnish permanent and objective records of the mode of development and progress of the growths, from earliest to advanced stages.. The fifteen tumors which fumished the transplants were typical large invasive adenocarcinomas having the usual irregular and apparently anarchic arrangement of their component tubules and acini. However, the transplanted tumors developed according to definite and well defined structural patterns, their type depending on the immediate physical environment. Three such morphogenetic patterns were observed.. Unimpeded outgrowths into the aqueous tumor characteristically assumed a tubulo-papillary arrangement; the earliest formation consisted of solid, purely ...
Definitions of hyphema. What is hyphema: The presence of blood in the anterior chamber of the eye.. Synonyms: hemorrhage, bleeding, hypha, hyphen, haemorrhage, hyphens
Persidsky, Y. and Poluektova, L. (2006), Immune privilege and HIV-1 persistence in the CNS. Immunological Reviews, 213: 180-194. doi: 10.1111/j.1600-065X.2006.00440.x ...
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... ,General description: Humidity wells in the base hold 10 l of water to maintain chamber humidity and probe hydration around the edges of the coverslip. The watertight seal eliminates the risk of waterbath contamination. This chamber can be used with either constant temperature waterbaths or hybridis,biological,biology supply,biology supplies,biology product
Systems and methods balance fluid in a fluid processing procedure during which an outgoing fluid is removed from an individual and an ingoing fluid is supplied to the individual. The systems and methods supply a volume of the outgoing fluid and a volume of the ingoing fluid into a volumetric chamber. The systems and methods discharge a volume of the outgoing fluid and a volume of the ingoing fluid from the volumetric chamber. The systems and methods synchronizes the supply and discharge of fluid to affect a concurrent discharge of the outgoing fluid and ingoing fluid from the volumetric chamber in volumetric balance with a concurrent supply of outgoing fluid and ingoing fluid into the volumetric chamber. The volumetric chamber can include at least one chamber including an interior wall dividing the chamber into a first compartment and a second compartment. The first compartment retains a volume of outgoing fluid. The second compartment retains a volume of ingoing fluid. The interior wall responds to
Viewfinity (www.viewfinity.com), the innovator of privilege management solutions, today announced that the company has partnered with e92plus Limited, a leading valued added distributor in the U.K. e92plus will distribute Viewfinitys industry leading privilege management and application control solution through its reseller partners throughout the U.K.
... : Sterilized system consists of a removable, polystyrene media chamber sealed t
I had my 20w ultrasound and they gave me a trainee. The ultrasound tech finally came in and was not able to get a good picture of her heart/4 chambers....
|p|The |strong|RC-28|/strong| is a special chamber containing two bath compartments separated by an adjustable dam. The dam functions both as a gate and barrier
See the popularity of the boys name Chamber over time, plus its meaning, origin, common sibling names, and more in BabyCenters Baby Names tool.
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You are at: Home » Products » Hospital Furniture » Bi-rocker bed with chamber pot In total 213268 number ofProductsinfo,Released today. 0 number of ...
Chitosan is a naturally occurring cationic polysaccharide and has attracted much attention in the past decade as an important ophthalmic biomaterial. We recently demonstrated that the genipin (GP) cross-linked chitosan is compatible with human retinal pigment epithelial cells. The present work aims to further investigate the in vivo biocompatibility of GP-treated chitosan (GP-chi group) by adopting the anterior chamber of a rabbit eye model. The glutaraldehyde (GTA) cross-linked samples (GTA-chi group) were used for comparison. The 7-mm-diameter membrane implants made from either non-cross-linked chitosan or chemically modified materials with a cross-linking degree of around 80% were inserted in the ocular anterior chamber for 24 weeks and characterized by slit-lamp and specular microscopic examinations, intraocular pressure measurements, and corneal thickness measurements. The interleukin-6 expressions at mRNA level were also detected by quantitative real-time reverse transcription polymerase chain
Answer: Phacomorphic glaucoma initially causes pupillary block as a result of a swollen, intumescent lens. Therefore, the anterior chamber is very shallow. In later stages, there is direct appositional closure of the angle from the lens pushing the peripheral iris anteriorly. Phacomorphic glaucoma is usually unilateral. The other eye may have a normal anterior chamber depth. The other eye may also not be classically hyperopic, as with primary angle closure glaucoma. The definitive cure for phacomorphic glaucoma is cataract surgery. The definitive cure for acute primary angle closure glaucoma is peripheral iridotomy ...
Posterior capsular rupture is a relatively rare complication, occurring in 0.9% of patients undergoing cataract surgery.7 Postsurgical aphakia and traumatic and nontraumatic dislocation of the IOL continue to be challenges for ophthalmologists when surgical correction is intended.8,9. Different techniques and lens designs exist for the management of aphakia without capsular support. Anterior chamber IOLs, scleral-sutured lenses, posterior chamber iris-sutured IOLs, and anterior and posterior chamber iris-fixated IOLs are the most widely used.2,4,8,10. Anterior chamber IOLs are technically simple to place, but they are associated with a considerable risk of trabecular damage, secondary glaucoma, and corneal decompensation.9 The currently used open-loop anterior chamber IOLs have lowered these complications, but a preoperative endothelial cell count and a measurement of anterior chamber depth are mandatory.10-12. In 2000, Zeh and Price described a technique for posterior chamber iris IOL ...
Lens subluxation is also seen in dogs and is characterized by a partial displacement of the lens. It can be recognized by trembling of the iris (iridodonesis) or lens (phacodonesis) and the presence of an aphakic crescent (an area of the pupil where the lens is absent).[4] Other signs of lens subluxation include mild conjunctival redness, vitreous humour degeneration, prolapse of the vitreous into the anterior chamber, and an increase or decrease of anterior chamber depth.[5] Removal of the lens before it completely luxates into the anterior chamber may prevent secondary glaucoma.[2] Extreme degree of luxation of lens is called "lenticele" in which lens comes out of the eyeball and becomes trapped under the Tenons capsule or conjunctiva [6] A nonsurgical alternative involves the use of a miotic to constrict the pupil and prevent the lens from luxating into the anterior chamber.[7] ...
Additional resources for Deja Review Emergency Medicine. Sample text. 1. Anterior chamber 2. Posterior chamber What is the jelly-like substance in the back part of the eyeball which provides shape and is relatively inert? Vitreous humor What are some components that make up the anterior segment of the eye? Cornea; Conjunctiva; Anterior chamber; Lens; Iris; Ciliary body What components make up the fundus of the eye? Macula; Optic nerve; Retina Please define the following forms: Anisocoria Unequal pupil size under equal lighting Hyphema Red blood cells in the anterior chamber Hypopyon White blood cells in the anterior chamber Limbus Circumferential border of the cornea and white sclera Tonopen Pen-shaped device to measure intraocular pressure What are some important elements in the history that should be obtained in any general eye exam? Intubation) What is the NIH stroke scale? Objective way to rapidly assess and determine the extent of neurologic deficits of a stroke patient and helps to ...
accommodation: ability of the lens to adjust its shape for vision at various distances in order to produce a clear image on the retina.. anterior chamber: space in front portion of the eye between the cornea and the iris and lens, which is filled with aqueous humor. aqueous humor: clear, watery fluid that fills the anterior chamber and the posterior chamber in the front part of the eye and provides nutrients to structures in the anterior chamber.. aqueous outflow pathway: the main exit route of aqueous humor from the eye, including the trabecular meshwork and Schlemms canal.. astigmatism: irregular curvature of the cornea or lens resulting in a distorted image because light rays are not focused on a single point on the retina.. binocular vision: coordinated use of the two eyes to see a single fused three-dimensional image.. blindspot: in testing the visual field, this is the blind area corresponding to the optic disk where the optic nerve fibers exit the eye and where there are no ...
PURPOSE To compare biometric changes measured with contact and noncontact methods after mitomycin-C-augmented trabeculectomy. METHODS In this prospective study, 31 eyes from 31 glaucoma patients scheduled for primary trabeculectomy were enrolled. Biometric parameters including axial length (AL), anterior chamber depth (ACD), and lens thickness (LT) were measured using contact ultrasound biometry (UD-6000 Ultrasonic A/B scanner biometer; Tomey Corporation, Nagoya, Japan) and a noncontact optical biometry device (Lenstar; Haag-Streit AG, Koeniz, Switzerland). Measurements were taken the day before trabeculectomy and then compared with measurements obtained 3 and 6 months after surgery. RESULTS The AL and ACD were significantly decreased at 3 and 6 months compared with baseline values taken with each biometry method. There was a significant increase in LT measured by the Lenstar device at the 3- and 6-month follow-up. At both the 3- and 6-month follow-up, the mean AL measurement reduction with the
A slit lamp examination of her corneas was unremarkable. Both anterior chamber angles appeared somewhat narrow at the slit lamp using the Van Herick technique. Her right eye had a laser peripheral iridotomy (LPI) at 12 oclock, and in the left there were two LPIs, one at 3 oclock and the other at 9 oclock. Her anterior chambers were quiet with no cells or flare. Applanation tensions at 3:45pm were 23mm Hg OD and 24mm Hg OS. Pachymetry readings were 598µm OD and 594µm OS.. Threshold visual fields were entirely normal in the right eye. The left was characterized by a field defect extending from the blind spot to fixation, greater below the horizontal than above. The findings were consistent with an optic nerve infarct and with the confrontation field findings.. The patient was dilated in the usual fashion. Through dilated pupils, her crystalline lenses were characterized by mild nuclear sclerosis in both eyes.. The cup-to-disc ratio in her right eye was 0.3x0.3 and that of the left was ...
There has been significant increase in the knowledge and understanding of the etiology, pathogenesis, and treatment of inflammatory periodontal diseases over the past few decades. However, arriving at a diagnosis and determining the course of treatment still are based largely on basic clinical techniques, such as periodontal probing. With all the advances in dental technologies, the periodontal probe remains the best diagnostic tool to collect information regarding the health status and attachment level of periodontal tissues, despite some inherent drawbacks, especially when it is used to monitor periodontal status longitudinally. Dental clinicians must be aware of the strengths as well as the limitations of using a periodontal probe to gather data. This systematic review describes several factors that affect the accuracy and reliability of periodontal probing, including periodontal health, probing force, type of periodontal probe, and probing site.
Must meet American College of Rheumatology Criteria for JRA.. Must have active anterior uveitis defined as the presence of inflammatory cells in the anterior chamber in at least one eye, or the current use of topical corticosteroids.. Must be between 2 and 18 years of age, inclusive.. Must have had previous therapy for uveitis.. Must be able to undergo a slit lamp biomicroscopy for assessment of anterior chamber cells.. Must not have a media opacity that precludes assessment of anterior chamber inflammation.. Must not have received a periocular injection of corticosteroids within 2 months of baseline.. Must not be currently receiving DMARD (disease modifying anti-rheumatic) therapy, with the exception of prednisone at a dose no greater than 1.5-2.0 mg/kg/day, or methotrexate at a dose no greater than 10 mg/m(2)/week.. Must not have active eye or joint inflammation requiring immediate addition or increase in systemic anti-inflammatory medications.. Must not have involvement in prior clinical ...
Aim: The purpose of this study was to evaluate whether there is an effect of cataractsurgery with phacoemulsification on IOP after one week of surgery. To investigate whether there is a correlation between Axial length (AL), Anterior chamber depth ACD, K-readings with preoperative (preop) and postoperative (postop) IOP.. Methods: The subjects for this study were extracted from the records at the Eye department in Kalmar Hospital, Sweden. From an existing data file 72 eyes out of 72 subjects were then analysed. The subjects were divided into 4 groups based on the axial length of the eyes, forstatistical analysis in Microsoft Excel and Statistica 6.0. Preoperative and postoperative IOP was evaluated to look for statistical significance. IOP was compared to AL, ACD and Kreadingsto look for any correlations.. Results: Preoperative IOP and postoperative IOP did not show any statistically significant difference after phacoemsulification, p , 0.05. There was no statistical significance orcorrelation ...
Methods of treating ocular disorders are disclosed, such as a method that includes inserting an implant in eye tissue, using a delivery instrument, such that an inlet portion of the implant is in an anterior chamber of an eye and an outlet portion of the implant is in a physiological outflow pathway; removing the delivery instrument from the eye without removing the implant; and conducting fluid comprising a therapeutic substance through the implant and into the physiological outflow pathway. Another method includes inserting an instrument into a physiologic outflow pathway through which aqueous humor drains from an anterior chamber of an eye; separating first and second walls of tissues which comprise the physiologic outflow pathway by injecting a fluid comprising a drug from the instrument while the instrument remains in the physiologic outflow pathway; and withdrawing the instrument following the injection with said fluid remaining within the eye such that the drug has a therapeutic effect on the eye
19. An ocular implant comprising: an inlet portion and a Schlemms canal portion distal to the inlet portion, the inlet portion being disposed at a proximal portion of the implant and configured to be placed within an anterior chamber of a human eye, the inlet portion having an inlet adapted to be in fluid communication with the anterior chamber; the Schlemms canal portion having a diameter between 0.005 inches and 0.04 inches with a central channel in fluid communication with the inlet; the Schlemms canal portion further having a first spine extending longitudinally along the central channel and having edges partially defining a first opening in fluid communication with the central channel and a second spine extending longitudinally along the central channel and having edges partially defining the first opening, the second spine being disposed distal to the first spine with a first frame extending longitudinally along the central channel, the first frame being disposed distal to the first ...
Figure 4. Clinical anterior segment photographs of patient 14-1. Left (A) and right (B) eyes with total aniridia and ectopia lentis with cataract. Goniophotographs reveal the anterior chamber angle of the probands eye with rudimentary iris process confirming the phenotype (aniridia). C: Left eye. D: Right eye.. ...
This page includes the following topics and synonyms: Intraocular Pressure, IOP, Schiotz Tonometry, Anterior Chamber Depth, Tonometry, Tonometer, Applanation Tonometry, Goldmann Tonometer, Tono-Pen, Pneumatonometer, Air-Puff Tonometry, Non-contact Tonometry, Digital Tonometry, Applanation Tonometer.
Ophthalmologists usually use slit lamp biomicroscopy to look for Kayser-Fleischer rings in Wilsons disease; anterior segment optical coherence tomography is a new alternative to identify the characteristic hyper-reflective layer in the deep corneal periphery at the level of Descemets membrane. This method allows non-ophthalmologists to look for and to quantify Kayser-Fleischer rings. ...
To assess the relationship between intraocular pressure (IOP) and anterior chamber angle (ACA) configuration as assessed by gonioscopy and anterior segment optical coherence tomography (AS-OCT). A total of 2045 subjects aged 50 years and older,
The first officially registered outbreak of infectious salmon anaemia (ISA) started in Norway in November 1984 (Thorud and Djupvik, 1988). It was a chronically proceeding disease among Atlantic salmon (Salmo salar) parr in a hatchery on the West Coast of Norway (Bremnes). Affected salmon were lethargic with pale gills, fin rot, exophthalmia, and haemorrhages in the anterior eye chamber and abdominal skin. Other clinical signs were a dark, pale or yellowish liver, a dark and swollen spleen, congested intestinal walls, petechia in periviceral fat, ascitic fluid, oedemas, haemorrhages in the swim bladder wall, and muscular haemorrhages. About 80% of the parr in the hatchery died during that winter and spring. Judging from the pathological findings, "Hitra disease" was suspected, however, no bacteria were isolated from diseased fish and oxytetracycline did not reduce mortality. In the following years a disease with similar clinical and pathological signs occurred in smolt and adult salmon in marine ...
We report a 10-year-old boy with unusually dense, bilateral central posterior capsule pigmentation associated with the characteristic clinical features of pigment dispersion syndrome, including Krukenbergs spindle and dense trabecular pigmentation in both eyes. There was no history of trauma , laser or intraocular surgeries . The presence of posterior or backward bowing of iris suggested a reverse pupillary block mechanism of pigment dispersion syndrome. Nd Yag laser peripheral iridotomy was performed in both eyes to relieve reverse pupillary block. Anterior segment optical coherence tomography (AS-OCT) showed reversal of iris concavity after laser iridotomy.. ...
TY - JOUR. T1 - Fungal endophthalmitis caused by Aspergillus ustus in a patient following cataract surgery. AU - Taner Yildiran, Sinasi. AU - Mehmet Mutlu, Fatih. AU - Ali Saracli, Mehmet. AU - Uysal, Yusuf. AU - Gonlum, Ahmet. AU - Sobaci, Gungor. AU - Sutton, Deanna A.. PY - 2006/11. Y1 - 2006/11. N2 - The first case of postoperative endophthalmitis after cataract surgery caused by Aspergillus ustus, a species that has only rarely been implicated in human disease, is described. Six weeks after cataract surgery, a 67-year-old medically controlled diabetic patient presented with uveitis, mild ciliary injection and ocular discomfort. Anterior chamber paracentesis, vitreous tap and finally complete vitrectomy with removal of the capsular bag including the intraocular lens were performed and several sets of culture yielded A. ustus. Despite vigorous systemic (itraconazole and caspofungin) and intravitreal (amphotericin B and caspofungin) antifungal therapy, the endophthalmitis did not improve. The ...
Purpose To understand the impact of socioeconomic status (SES) on the diagnosis of primary open-angle glaucoma (POAG) and primary angle closure glaucoma (PACG) in Taiwan. Methods Subjects with glaucoma were identified from the National Health Insurance Research Database of year 2006, which included one million randomly selected insurants. Individuals who had ≥4 ambulatory visits within one year which had the diagnosis code of POAG (ICD-9-CM 365.11 or 365.12) or PACG (365.23) and concurrent prescription of anti-glaucoma medication or surgery were selected. Individual SES was represented by monthly income calculated from the insurance premium. Neighborhood SES was defined based on neighborhood household income averages. Urbanization level of habitation was categorized into 3 levels. The odds ratio of having POAG or PACG in subjects with different SES was evaluated by using multiple logistic regression analysis. Results In total, 752 and 561 subjects with POAG and PACG, respectively, who were treated

Acute Angle-Closure Glaucoma Surgery & Treatment OptionsAcute Angle-Closure Glaucoma Surgery & Treatment Options

... can reach the anterior chamber and the trabecular meshwork (or drainage channels). As the fluid flows into the anterior chamber ... is better able to drain out from the posterior chamber to the anterior chamber of the eye. Prior to a laser iridotomy, the ... In either case, the position of the iris causes the normally open anterior chamber angle to close. Aqueous humor that should ... This examination may reveal a poorly reactive pupil, a shallow anterior chamber, corneal swelling, redness of the white of the ...
more infohttps://www.emedicinehealth.com/acute_angle-closure_glaucoma/article_em.htm

Visian Implantable Collamer LensVisian Implantable Collamer Lens

Have proper anterior chamber depth and acceptable eye tissue cell density (this will be determined by an ophthalmologist after ... Instead, the phakic intraocular lens is placed in the eyes posterior chamber, where it works with the natural lens to correct ...
more infohttp://lasik.wustl.edu/LasikPhakicIol/AlternativestoLasik/VisianImplantableCollamerLens.aspx

Visian ICL Implantable Collamer Implantable Contact Lens LensVisian ICL Implantable Collamer Implantable Contact Lens Lens

adults 21-45 years of age with an anterior chamber depth (ACD) of 3.00 mm or greater, and a stable refractive history within ... by gently folding it and injecting into the anterior chamber through a tiny incision only 3.0mm in length placed by the eye ... the reduction of myopia ranging from -15D to -20D anterior with less than or equal to 2.5D astigmatism at the spectacle plane, ...
more infohttp://positivefaces.com/docs/lasik-visian-implantable-collamer-lens.html

Anterior ChamberAnterior Chamber

... The anterior chamber is that section of the eye that lies between the cornea and the iris. The iris divides ... into an anterior chamber and a posterior chamber (between the iris and the lens). ... the space between the cornea and the lens, which is called the anterior cavity, ...
more infohttps://www.innerbody.com/anatomy/nervous/anterior-chamber

Anterior Chamber Worm - EyetubeAnterior Chamber Worm - Eyetube

A surgical video demonstrating a technique for removal of an anterior chamber parasite. ... Anterior Chamber Worm. Chris Kurz MD, Majid Moshirfar MD, Mark Mifflin MD. Channels: General , Posted 5/27/2009 ... What kind of worm is it? How did it get into the Anterior Chamber? ... A surgical video demonstrating a technique for removal of an anterior chamber parasite. ...
more infohttps://eyetube.net/video/hoopih/

Anterior chamber | BMJ Case ReportsAnterior chamber | BMJ Case Reports

Bilateral acute anterior uveitis: a rare ocular side effect of erlotinib Sarah Chan, Elizabeth Ahern, Sarah Chaudhry, Brett ... Optic shrinkage and retraction in opacified hydrophilic acrylic intraocular lens: an anterior segment optical CT-based ... Transscleral cyclophotocoagulation as primary management in a nanophthalmic eye with anterior uveitis and secondary mixed ...
more infohttps://casereports.bmj.com/keyword/anterior-chamber

Anterior Chamber Angle Evaluation with Fourier-Domain Optical Coherence TomographyAnterior Chamber Angle Evaluation with Fourier-Domain Optical Coherence Tomography

... Matthew Bald, Yan Li, and David Huang ... Matthew Bald, Yan Li, and David Huang, "Anterior Chamber Angle Evaluation with Fourier-Domain Optical Coherence Tomography," ...
more infohttps://www.hindawi.com/journals/joph/2012/103704/cta/

INTRAOCULAR THIN LENS FOR ANTERIOR CHAMBER INSTALLATION - Nordan, Lee T.INTRAOCULAR THIN LENS FOR ANTERIOR CHAMBER INSTALLATION - Nordan, Lee T.

A thin foldable intraocular implant specifically configured for installation into the anterior chamber of a phakic or ... Whether the IOL is installed in the posterior chamber of the eye in lieu of the removed cataracted lens, or in the anterior ... Due to the fact that prior art IOLs specially those installed in the anterior chamber must be precisely tailored to the size of ... 1. Accordingly, the median portion and the lateral portion with their bent flaps 8 form a vault that spans the anterior chamber ...
more infohttp://www.freepatentsonline.com/y2009/0182422.html

Eye, Anterior chamber - Proteinaceous fluid - Nonneoplastic Lesion AtlasEye, Anterior chamber - Proteinaceous fluid - Nonneoplastic Lesion Atlas

Eye, Anterior chamber - Proteinaceous fluid in a female F344/N rat from a chronic study. Anterior chamber proteinaceous fluid ( ... Proteinaceous fluid in the anterior chamber should be diagnosed as "Eye, Anterior chamber - Proteinaceous fluid" and assigned a ... If anterior chamber proteinaceous fluid is part of a more dispersed inflammatory process in the eye, it need not be diagnosed ... Eye, Anterior chamber - Proteinaceous fluid in a female F344/N rat from a chronic study. There are accumulations of homogeneous ...
more infohttps://ntp.niehs.nih.gov/nnl/special_senses/eye/acprotfl/index.htm

Anterior chamber sterilization may not prevent endophthalmitis - American Academy of OphthalmologyAnterior chamber sterilization may not prevent endophthalmitis - American Academy of Ophthalmology

... case-control study examined the relationship between anterior chamber sterilization and vitreous positivity rate in cultures ... The anterior chamber and vitreous displayed poor concordance. As a result, anterior chamber findings were in no way helpful at ... This retrospective, case-control study examined the relationship between anterior chamber sterilization and vitreous positivity ...
more infohttps://www.aao.org/editors-choice/anterior-chamber-sterilization-may-not-prevent-end

Silicone Oil Removal From the Anterior Chamber Using Dispers... : RETINASilicone Oil Removal From the Anterior Chamber Using Dispers... : RETINA

Home , Published Ahead-of-Print , Silicone Oil Removal From the Anterior Chamber Using Dispers... ... Silicone Oil Removal From the Anterior Chamber Using Dispersive Viscoelastic. Iaboni, Douglas S. M., MSc*; Seamone, Mark E., ...
more infohttps://journals.lww.com/retinajournal/Citation/publishahead/Silicone_Oil_Removal_From_the_Anterior_Chamber.96946.aspx

Assessment of the anterior chamberAssessment of the anterior chamber

Methods of assessing the anterior chamber. Much of the anterior chamber is readily visible with the slit lamp biomicroscope. ... The average adult eye has a chamber depth of 3.15 mm The chamber shallows by 0.01 mm per year. An eye with an anterior chamber ... 2) Slit lamp estimation of the anterior chamber "angle" (e.g. Van Herrick) ... 3) Slit lamp estimation of the anterior chamber depth ( or with ultrasound) ...
more infohttp://www.academy.org.uk/lectures/barnard12.htm

The Anterior Chamber Depth and Retinal Nerve Fiber Layer Thickness in ChildrenThe Anterior Chamber Depth and Retinal Nerve Fiber Layer Thickness in Children

... Jacky W. Y. Lee, Gordon S. K. Yau, Tiffany T. Y ... J. Caprioli, G. L. Spaeth, and R. P. Wilson, "Anterior chamber depth in open angle glaucoma," British Journal of Ophthalmology ... D. Wang, M. Qi, M. He, L. Wu, and S. Lin, "Ethnic difference of the anterior chamber area and volume and its association with ... S. W. Cheung, R. Chan, R. C. Cheng, and P. Cho, "Effect of cycloplegia on axial length and anterior chamber depth measurements ...
more infohttps://www.hindawi.com/journals/tswj/2014/538283/ref/

Patent US6478781 - Anterior chamber stabilizing device for use in eye surgery - Google PatentsPatent US6478781 - Anterior chamber stabilizing device for use in eye surgery - Google Patents

The aspiration tube and an irrigation tube may be coupled to an anterior chamber of a cornea during a phaco procedure. The high ... The aspiration tube and an irrigation tube may be coupled to an anterior chamber of a cornea during a phaco procedure. The high ... The aspiration tube and an irrigation tube may be coupled to an anterior chamber of a cornea during a phaco procedure. The high ... The aspiration tube and an irrigation tube may be coupled to an anterior chamber of a cornea during a phaco procedure. The high ...
more infohttp://www.google.com/patents/US6478781?dq=U.S.+Patent+

Anterior chamber of eyeball - WikipediaAnterior chamber of eyeball - Wikipedia

The depth of the anterior chamber of the eye varies between 1.5 and 4.0 mm, averaging 3.0 mm. The anterior chamber tends to ... One peculiar feature of the anterior chamber is dampened immune response to allogenic grafts. This is called anterior chamber ... As the anterior chamber depth decreases below 2.5 mm, the risk for angle closure glaucoma increases. Shallow anterior chambers ... This ratio is linearly correlated with the depth of the anterior chamber with the following equation: Anterior chamber depth ( ...
more infohttps://en.wikipedia.org/wiki/Anterior_chamber_of_eyeball

The Significance of the Anterior Chamber in Tumor Transplantation | Cancer ResearchThe Significance of the Anterior Chamber in Tumor Transplantation | Cancer Research

The Significance of the Anterior Chamber in Tumor Transplantation. II. The Nature of Tumor Growth beyond the Anterior Chamber. ... The Significance of the Anterior Chamber in Tumor Transplantation Message Subject (Your Name) has forwarded a page to you from ...
more infohttp://cancerres.aacrjournals.org/content/11/10/811

Anterior chamber of eye structure - Semantic ScholarAnterior chamber of eye structure - Semantic Scholar

Anterior chamber of eye structure. Known as: Chambers, Anterior, Anterior Chamber of the Eye, anterior chamber eye (More). ... Anterior chamber width measurement by high-speed optical coherence tomography.. *Jason A Goldsmith, Yan Li, +5 authors David ... Anterior chamber measurements using Pentacam rotating Scheimpflug camera.. *Tanja M Rabsilber, Ramin Khoramnia, Gerd U Auffarth ... OBJECTIVE To measure anterior chamber (AC) width and other dimensions relevant to the sizing of phakic intraocular lenses (IOLs ...
more infohttps://www.semanticscholar.org/topic/Anterior-chamber-of-eye-structure/6084

Anterior Chamber Morphometry before and after Cataract Surgery | OMICS InternationalAnterior Chamber Morphometry before and after Cataract Surgery | OMICS International

To quantify the effects of cataract surgery on the anterior chamber topography in patients with angleclosure glaucoma (PACG), ... anterior chamber depth (ACD), anterior chamber volume (ACV), anterior chamber angle (ACA) and central corneal thickness (CCT) ... determined by a shallower anterior chamber. Thus, at the last follow-up session, the anterior chamber morphology became very ... Anterior Chamber Morphometry before and after Cataract Surgery Alina-Dana Baxant1*, Jara Hornová1, Pavel Studený1, Jana Vránová ...
more infohttps://www.omicsonline.org/open-access/anterior-chamber-morphometry-before-and-after-cataract-surgery-2155-9570-1000548.php?aid=72551

Reference values for anterior chamber morphometrics with swept-source  | OPTHReference values for anterior chamber morphometrics with swept-source | OPTH

... study is to generate reference values for anterior chamber morphometrics to facilitate the interpretation of anterior chamber ... Keywords: reference value, anterior chamber, optical coherence tomography, Caucasian ... the mean anterior chamber depth (ACD) was 2.75±0.39 mm and the mean lens vault (LV) was 0.44±0.30 mm. A smaller temporal TIA500 ... shallower ACD and higher LV were found in female and hyperopic subjects.Conclusion: Reference values for anterior chamber ...
more infohttps://www.dovepress.com/reference-values-for-anterior-chamber-morphometrics-with-swept-source--peer-reviewed-article-OPTH

Acanthamoeba detection in the anterior chamber | British Journal of OphthalmologyAcanthamoeba detection in the anterior chamber | British Journal of Ophthalmology

anterior chamber tap. Among the spectrum of infectious keratites, acanthamoeba keratitis (AK) represents one of the most ... An anterior uveitis and/or a hypopyon may be present too. The diagnosis is usually made by scraping and culturing the corneal ...
more infohttp://bjo.bmj.com/content/90/5/649

Intraocular eyelashes and iris cyst in anterior chamber following pene | IMCRJIntraocular eyelashes and iris cyst in anterior chamber following pene | IMCRJ

... two eyelashes in the superior anterior chamber, and an iris cyst measuring 4 mm × 4 mm in the superior iris. The right eye was ... Intraocular eyelashes and iris cyst in anterior chamber following penetrating eye injury: a case report Sabin Sahu,1 Lila Raj ... Intraocular eyelashes and iris cyst in anterior chamber following penetrating eye injury: a case report. ... two eyelashes in the superior anterior chamber, and an iris cyst measuring 4 mm × 4 mm in the superior iris. The right eye was ...
more infohttps://www.dovepress.com/intraocular-eyelashes-and-iris-cyst-in-anterior-chamber-following-pene-peer-reviewed-article-IMCRJ

Eye diseases, integral view/Mouches volantes in the anterior chamber of the eye - WikiversityEye diseases, integral view/Mouches volantes in the anterior chamber of the eye - Wikiversity

To prove the hypothesis or mouches volantes located in the anterior chamber and especially on the front surface of the lens a ... This strongly suggests they are located in the Anterior Chamber, most likely on the frontal surface of the crystalline lens, ... The mouches volantes observed here seem to be traces of microorganisms moving around in the anterior chamber of the eye. ... The mouches volantes in the anterior chamber appear as grey spots in more dimly lighted surroundings but reveal themselves as ...
more infohttps://en.wikiversity.org/wiki/Eye_diseases,_integral_view/Mouches_volantes_in_the_anterior_chamber_of_the_eye

Anterior Chamber Width Measurement by Optical Coherence Tomography  | IOVS | ARVO JournalsAnterior Chamber Width Measurement by Optical Coherence Tomography | IOVS | ARVO Journals

Anterior Chamber Width Measurement by Optical Coherence Tomography J.A. Goldsmith; Y. Li; M.R. Chalita; V. Westfall; C. Patel; ... Anterior Chamber Width Measurement by Optical Coherence Tomography You will receive an email whenever this article is corrected ... Abstract: : Purpose: Measurement of anterior chamber (AC) width with optical coherence tomography (OCT). Methods: A high-speed ... J.A. Goldsmith, Y. Li, M.R. Chalita, V. Westfall, C. Patel, A.M. Rollins, J. Izatt, D. Huang; Anterior Chamber Width ...
more infohttps://iovs.arvojournals.org/article.aspx?articleid=2415405

Ultrasound biomicroscopy of ZSAL-4 anterior chamber phakic i... : Journal of Cataract & Refractive SurgeryUltrasound biomicroscopy of ZSAL-4 anterior chamber phakic i... : Journal of Cataract & Refractive Surgery

AC = anterior chamber.. Discussion. Renewed interest in the implantation of phakic anterior chamber IOLs in highly myopic eyes ... providing 360-degree coverage of the anterior chamber. To perform the central measurements, a section of the anterior chamber ... The artifactual elevation of the anterior surface of the crystalline lens (arrows) can be seen. AC = anterior chamber. ... This study analyzed the anatomic relationships between the ZSAL-4 anterior chamber phakic IOL and anterior segment structures ...
more infohttps://journals.lww.com/jcrs/Fulltext/2001/10000/Ultrasound_biomicroscopy_of_ZSAL_4_anterior.24.aspx

Isolated Anterior Chamber Relapse in a Child with Chronic Myeloid Leukemia: Masquerade SyndromeIsolated Anterior Chamber Relapse in a Child with Chronic Myeloid Leukemia: Masquerade Syndrome

The authors report a case of anterior uveitis with hypopyon that was refractory to topical corticosteroid therapy. A detailed ... Anterior chamber infiltration in a patient with Ph+ acute lymphoblastic leukemia in remission with imatinib. Am J Ophthalmol. ... Anterior chamber infiltration in a patient with Ph+ acute lymphoblastic leukemia in remission with imatinib. Am J Ophthalmol. ... Isolated Anterior Chamber Relapse in a Child with Chronic Myeloid Leukemia: Masquerade Syndrome. Mincheol Seong, MD; Myoung ...
more infohttps://www.healio.com/ophthalmology/journals/jpos/2011-11-48-6/%7B48e97fd7-eea7-4573-8b46-7a1e19963730%7D/isolated-anterior-chamber-relapse-in-a-child-with-chronic-myeloid-leukemia-masquerade-syndrome
  • 9. A method to correct visual acuity in a mammalian eye, comprising: introducing the single piece corrective device of claim 1 into an anterior chamber of the mammalian eye, such that the visual acuity of the mammalian eye is corrected. (freepatentsonline.com)
  • Several previews of clinical trials proved that cataract surgery improves visual acuity, changes the architectonic of the anterior chamber and reduces IOP both in glaucomatous and nonglaucomatous eyes [ 2 , 3 , 8 - 29 ]. (omicsonline.org)
  • Non-glaucomatous Caucasian subjects, who were newly referred to the outpatient department of the University Eye Clinic Maastricht UMC+, were asked to undergo anterior segment assessment with SS-OCT imaging prior to routine eye examination (including visual acuity and refractive error measurements, Goldmann applanation tonometry, slit lamp examination and funduscopy). (dovepress.com)
  • Novel association of smaller anterior chamber width with angle closure in Singaporeans," Ophthalmology , vol. 117, no. 10, pp. 1967-1973, 2010. (hindawi.com)
  • 4 , 5 However, such a bandpass filter at certain frequencies is not desirable for the measurement of the minute OP in the anterior chamber (termed as aOP and defined as the relative motion between cornea and crystalline lens). (spiedigitallibrary.org)
  • 1-5 However, the procedure raises questions about the long-term potential risks to the corneal endothelium, lens, anterior uvea, and other ocular structures. (lww.com)
  • The aspiration tube and an irrigation tube may be coupled to an anterior chamber of a cornea during a phaco procedure. (google.com)
  • Gonioscopy was used to classify anterior chamber angles according to a modified Shaffer system. (ovid.com)
  • The patient did not respond to treatment, so anterior chamber aspiration was performed on the sixth day after the initial examination. (healio.com)
  • Cytologic Examination of Anterior Chamber Paracentesis Showed an Abundance of Leukemic Blasts. (healio.com)
  • From other observations it is assumed, the structures are transparent and located on the front surface of the crystalline lens or at least within the anterior chamber of the eye. (wikiversity.org)
  • If anterior chamber proteinaceous fluid is part of a more dispersed inflammatory process in the eye, it need not be diagnosed separately but should be described in the pathology narrative. (nih.gov)
  • Eye, Anterior chamber - Proteinaceous fluid in a female F344/N rat from a chronic study. (nih.gov)
  • Anterior chamber proteinaceous fluid (arrow) is characterized by accumulations of homogeneous pale eosinophilic material that contains few if any inflammatory cells. (nih.gov)
  • Proteinaceous fluid in the anterior chamber should be diagnosed as "Eye, Anterior chamber - Proteinaceous fluid" and assigned a severity grade. (nih.gov)
  • To prove the hypothesis or mouches volantes located in the anterior chamber and especially on the front surface of the lens a model of the human eye and the assumed structure of the mouches volantes was created. (wikiversity.org)
  • A bifocal lens implanted in the anterior chamber of the eye having an air space in the upper lens edge to position the lens at the upper edge of the pupil in dilated and constricted state. (google.com)
  • The IOL footplates appeared to be correctly positioned in the anterior chamber angle in all eyes. (lww.com)
  • The anterior chamber tends to become shallower at older age, and in eyes with hypermetropia (far sightedness). (wikipedia.org)
  • PURPOSE: To determine whether injection of a soluble antigen, ovalbumin (OVA), into the anterior chamber of cynomolgus monkey eyes would impair the ability of these animals to subsequently develop delayed hypersensitivity when confronted by this antigen in immunogenic form. (arvojournals.org)
  • This will enable the surgeon to determine the diameter and order an anterior chamber IOL of a specified size prior to surgery. (osti.gov)