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.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.Biometry: The use of statistical and mathematical methods to analyze biological observations and phenomena.Refraction, Ocular: Refraction of LIGHT effected by the media of the EYE.Refractive Errors: Deviations from the average or standard indices of refraction of the eye through its dioptric or refractive apparatus.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)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).Emmetropia: The condition of where images are correctly brought to a focus on the retina.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)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)Ocular Physiological Processes: Biological action and events that support the functions of the EYE and VISION, OCULAR.Orthokeratologic Procedures: An alternative to REFRACTIVE SURGICAL PROCEDURES. A therapeutic procedure for correcting REFRACTIVE ERRORS. It involves wearing CONTACT LENSES designed to force corrective changes to the curvature of the CORNEA that remain after the lenses are removed. The effect is temporary but is maintained by wearing the therapeutic lenses daily, usually during sleep.Body Weights and Measures: Measurements of the height, weight, length, area, etc., of the human and animal body or its parts.Ocular Physiological Phenomena: Processes and properties of the EYE as a whole or of any of its parts.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.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)Intraocular Pressure: The pressure of the fluids in the eye.Choroid: The thin, highly vascular membrane covering most of the posterior of the eye between the RETINA and SCLERA.Lenses, Intraocular: Artificial implanted lenses.Tonometry, Ocular: Measurement of ocular tension (INTRAOCULAR PRESSURE) with a tonometer. (Cline, et al., Dictionary of Visual Science, 4th ed)Aphakia: Absence of crystalline lens totally or partially from field of vision, from any cause except after cataract extraction. Aphakia is mainly congenital or as result of LENS DISLOCATION AND SUBLUXATION.Myopia, Degenerative: Excessive axial myopia associated with complications (especially posterior staphyloma and CHOROIDAL NEOVASCULARIZATION) that can lead to BLINDNESS.Eyeglasses: A pair of ophthalmic lenses in a frame or mounting which is supported by the nose and ears. The purpose is to aid or improve vision. It does not include goggles or nonprescription sun glasses for which EYE PROTECTIVE DEVICES is available.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.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.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.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.Optic Disk: The portion of the optic nerve seen in the fundus with the ophthalmoscope. It is formed by the meeting of all the retinal ganglion cell axons as they enter the optic nerve.Eye Diseases: Diseases affecting the eye.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.Sensory Deprivation: The absence or restriction of the usual external sensory stimuli to which the individual responds.Diagnostic Techniques, Ophthalmological: Methods and procedures for the diagnosis of diseases of the eye or of vision disorders.Retinoscopy: An objective determination of the refractive state of the eye (NEARSIGHTEDNESS; FARSIGHTEDNESS; ASTIGMATISM). By using a RETINOSCOPE, the amount of correction and the power of lens needed can be determined.Eye Movements: Voluntary or reflex-controlled movements of the eye.Scleral Diseases: General disorders of the sclera or white of the eye. They may include anatomic, embryologic, degenerative, or pigmentation defects.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.Cataract Extraction: The removal of a cataractous CRYSTALLINE LENS from the eye.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)Optometry: The professional practice of primary eye and vision care that includes the measurement of visual refractive power and the correction of visual defects with lenses or glasses.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.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)Macula Lutea: An oval area in the retina, 3 to 5 mm in diameter, usually located temporal to the posterior pole of the eye and slightly below the level of the optic disk. It is characterized by the presence of a yellow pigment diffusely permeating the inner layers, contains the fovea centralis in its center, and provides the best phototropic visual acuity. It is devoid of retinal blood vessels, except in its periphery, and receives nourishment from the choriocapillaris of the choroid. (From Cline et al., Dictionary of Visual Science, 4th ed)Anisometropia: A condition of an inequality of refractive power of the two eyes.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)SingaporePhacoemulsification: 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)Optics and Photonics: A specialized field of physics and engineering involved in studying the behavior and properties of light and the technology of analyzing, generating, transmitting, and manipulating ELECTROMAGNETIC RADIATION in the visible, infrared, and ultraviolet range.Eye Abnormalities: Congenital absence of or defects in structures of the eye; may also be hereditary.Eye Color: Color of the iris.Microphthalmos: Congenital or developmental anomaly in which the eyeballs are abnormally small.Ophthalmoscopy: Examination of the interior of the eye with an ophthalmoscope.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.Length of Stay: The period of confinement of a patient to a hospital or other health facility.Astigmatism: Unequal curvature of the refractive surfaces of the eye. Thus a point source of light cannot be brought to a point focus on the retina but is spread over a more or less diffuse area. This results from the radius of curvature in one plane being longer or shorter than the radius at right angles to it. (Dorland, 27th ed)Pupil: The aperture in the iris through which light passes.Eye Injuries: Damage or trauma inflicted to the eye by external means. The concept includes both surface injuries and intraocular injuries.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.Mydriatics: Agents that dilate the pupil. They may be either sympathomimetics or parasympatholytics.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.Asian Continental Ancestry Group: Individuals whose ancestral origins are in the southeastern and eastern areas of the Asian continent.Pseudophakia: Presence of an intraocular lens after cataract extraction.Nerve Fibers: Slender processes of NEURONS, including the AXONS and their glial envelopes (MYELIN SHEATH). Nerve fibers conduct nerve impulses to and from the CENTRAL NERVOUS SYSTEM.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: Pieces of glass or other transparent materials used for magnification or increased visual acuity.Retinal Ganglion Cells: Neurons of the innermost layer of the retina, the internal plexiform layer. They are of variable sizes and shapes, and their axons project via the OPTIC NERVE to the brain. A small subset of these cells act as photoreceptors with projections to the SUPRACHIASMATIC NUCLEUS, the center for regulating CIRCADIAN RHYTHM.Axial Length, Eye: The distance between the anterior and posterior poles of the eye, measured either by ULTRASONOGRAPHY or by partial coherence interferometry.Photography: Method of making images on a sensitized surface by exposure to light or other radiant energy.Cyclopentolate: A parasympatholytic anticholinergic used solely to obtain mydriasis or cycloplegia.Dry Eye Syndromes: Corneal and conjunctival dryness due to deficient tear production, predominantly in menopausal and post-menopausal women. Filamentary keratitis or erosion of the conjunctival and corneal epithelium may be caused by these disorders. Sensation of the presence of a foreign body in the eye and burning of the eyes may occur.Endotamponade: A method of stopping internal bleeding or blood flow, or the closure of a wound or body cavity, achieved by applying pressure or introducing an absorbent liquid, gel, or tampon.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, 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.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).Vision, Monocular: Images seen by one eye.Contact Lenses: Lenses designed to be worn on the front surface of the eyeball. (UMDNS, 1999)Tupaia: A genus of tree shrews of the family TUPAIIDAE which consists of about 12 species. One of the most frequently encountered species is T. glis. Members of this genus inhabit rain forests and secondary growth areas in southeast Asia.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.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.Anthropometry: The technique that deals with the measurement of the size, weight, and proportions of the human or other primate body.Refractometry: Measurement of the index of refraction (the ratio of the velocity of light or other radiation in the first of two media to its velocity in the second as it passes from one into the other).Ocular Hypertension: A condition in which the intraocular pressure is elevated above normal and which may lead to glaucoma.Corneal Diseases: Diseases of the cornea.Prospective Studies: Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group.Aphakia, Postcataract: Absence of the crystalline lens resulting from cataract extraction.Eye Burns: Injury to any part of the eye by extreme heat, chemical agents, or ultraviolet radiation.Reproducibility of Results: The statistical reproducibility of measurements (often in a clinical context), including the testing of instrumentation or techniques to obtain reproducible results. The concept includes reproducibility of physiological measurements, which may be used to develop rules to assess probability or prognosis, or response to a stimulus; reproducibility of occurrence of a condition; and reproducibility of experimental results.Light: That portion of the electromagnetic spectrum in the visible, ultraviolet, and infrared range.Fovea Centralis: An area approximately 1.5 millimeters in diameter within the macula lutea where the retina thins out greatly because of the oblique shifting of all layers except the pigment epithelium layer. It includes the sloping walls of the fovea (clivus) and contains a few rods in its periphery. In its center (foveola) are the cones most adapted to yield high visual acuity, each cone being connected to only one ganglion cell. (Cline et al., Dictionary of Visual Science, 4th ed)Anatomy, Cross-Sectional: Descriptive anatomy based on three-dimensional imaging (IMAGING, THREE-DIMENSIONAL) of the body, organs, and structures using a series of computer multiplane sections, displayed by transverse, coronal, and sagittal analyses. It is essential to accurate interpretation by the radiologist of such techniques as ultrasonic diagnosis, MAGNETIC RESONANCE IMAGING, and computed tomography (TOMOGRAPHY, X-RAY COMPUTED). (From Lane & Sharfaei, Modern Sectional Anatomy, 1992, Preface)Contact Lenses, Hydrophilic: Soft, supple contact lenses made of plastic polymers which interact readily with water molecules. Many types are available, including continuous and extended-wear versions, which are gas-permeable and easily sterilized.Aging: The gradual irreversible changes in structure and function of an organism that occur as a result of the passage of time.Polymorphism, Restriction Fragment Length: Variation occurring within a species in the presence or length of DNA fragment generated by a specific endonuclease at a specific site in the genome. Such variations are generated by mutations that create or abolish recognition sites for these enzymes or change the length of the fragment.Eye Enucleation: The surgical removal of the eyeball leaving the eye muscles and remaining orbital contents intact.Circadian Rhythm: The regular recurrence, in cycles of about 24 hours, of biological processes or activities, such as sensitivity to drugs and stimuli, hormone secretion, sleeping, and feeding.Retrospective Studies: Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons.Bruch Membrane: The inner layer of CHOROID, also called the lamina basalis choroideae, located adjacent to the RETINAL PIGMENT EPITHELIUM; (RPE) of the EYE. It is a membrane composed of the basement membranes of the choriocapillaris ENDOTHELIUM and that of the RPE. The membrane stops at the OPTIC NERVE, as does the RPE.Retinopathy of Prematurity: A bilateral retinopathy occurring in premature infants treated with excessively high concentrations of oxygen, characterized by vascular dilatation, proliferation, and tortuosity, edema, and retinal detachment, with ultimate conversion of the retina into a fibrous mass that can be seen as a dense retrolental membrane. Usually growth of the eye is arrested and may result in microophthalmia, and blindness may occur. (Dorland, 27th ed)Retinal DiseasesChina: A country spanning from central Asia to the Pacific Ocean.Optic Nerve: The 2nd cranial nerve which conveys visual information from the RETINA to the brain. The nerve carries the axons of the RETINAL GANGLION CELLS which sort at the OPTIC CHIASM and continue via the OPTIC TRACTS to the brain. The largest projection is to the lateral geniculate nuclei; other targets include the SUPERIOR COLLICULI and the SUPRACHIASMATIC NUCLEI. Though known as the second cranial nerve, it is considered part of the CENTRAL NERVOUS SYSTEM.Lasers: An optical source that emits photons in a coherent beam. Light Amplification by Stimulated Emission of Radiation (LASER) is brought about using devices that transform light of varying frequencies into a single intense, nearly nondivergent beam of monochromatic radiation. Lasers operate in the infrared, visible, ultraviolet, or X-ray regions of the spectrum.Fundus Oculi: The concave interior of the eye, consisting of the retina, the choroid, the sclera, the optic disk, and blood vessels, seen by means of the ophthalmoscope. (Cline et al., Dictionary of Visual Science, 4th ed)Injections: Introduction of substances into the body using a needle and syringe.Chickens: Common name for the species Gallus gallus, the domestic fowl, in the family Phasianidae, order GALLIFORMES. It is descended from the red jungle fowl of SOUTHEAST ASIA.Eye Banks: Centers for storing various parts of the eye for future use.Cross-Sectional Studies: Studies in which the presence or absence of disease or other health-related variables are determined in each member of the study population or in a representative sample at one particular time. This contrasts with LONGITUDINAL STUDIES which are followed over a period of time.Reference Values: The range or frequency distribution of a measurement in a population (of organisms, organs or things) that has not been selected for the presence of disease or abnormality.Retinal Vein Occlusion: Blockage of the RETINAL VEIN. Those at high risk for this condition include patients with HYPERTENSION; DIABETES MELLITUS; ATHEROSCLEROSIS; and other CARDIOVASCULAR DISEASES.Visual Fields: The total area or space visible in a person's peripheral vision with the eye looking straightforward.Diseases in Twins: Disorders affecting TWINS, one or both, at any age.Retinal Pigment Epithelium: The single layer of pigment-containing epithelial cells in the RETINA, situated closely to the tips (outer segments) of the RETINAL PHOTORECEPTOR CELLS. These epithelial cells are macroglia that perform essential functions for the photoreceptor cells, such as in nutrient transport, phagocytosis of the shed photoreceptor membranes, and ensuring retinal attachment.Follow-Up Studies: Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease.Eye Neoplasms: Tumors or cancer of the EYE.Macaca mulatta: A species of the genus MACACA inhabiting India, China, and other parts of Asia. The species is used extensively in biomedical research and adapts very well to living with humans.Postoperative Period: The period following a surgical operation.Compound Eye, Arthropod: Light sensory organ in ARTHROPODS consisting of a large number of ommatidia, each functioning as an independent photoreceptor unit.Twins, Dizygotic: Two offspring from the same PREGNANCY. They are from two OVA, fertilized at about the same time by two SPERMATOZOA. Such twins are genetically distinct and can be of different sexes.Eye Protective Devices: Personal devices for protection of the eyes from impact, flying objects, glare, liquids, or injurious radiation.Twins, Monozygotic: Two off-spring from the same PREGNANCY. They are from a single fertilized OVUM that split into two EMBRYOS. Such twins are usually genetically identical and of the same sex.Prevalence: The total number of cases of a given disease in a specified population at a designated time. It is differentiated from INCIDENCE, which refers to the number of new cases in the population at a given time.Organ Size: The measurement of an organ in volume, mass, or heaviness.Infant, Newborn: An infant during the first month after birth.Imaging, Three-Dimensional: The process of generating three-dimensional images by electronic, photographic, or other methods. For example, three-dimensional images can be generated by assembling multiple tomographic images with the aid of a computer, while photographic 3-D images (HOLOGRAPHY) can be made by exposing film to the interference pattern created when two laser light sources shine on an object.Disease Models, Animal: Naturally occurring or experimentally induced animal diseases with pathological processes sufficiently similar to those of human diseases. They are used as study models for human diseases.Eye Injuries, Penetrating: Deeply perforating or puncturing type intraocular injuries.Analysis of Variance: A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable.Fixation, Ocular: The positioning and accommodation of eyes that allows the image to be brought into place on the FOVEA CENTRALIS of each eye.Ophthalmic Solutions: Sterile solutions that are intended for instillation into the eye. It does not include solutions for cleaning eyeglasses or CONTACT LENS SOLUTIONS.Sex Factors: Maleness or femaleness as a constituent element or influence contributing to the production of a result. It may be applicable to the cause or effect of a circumstance. It is used with human or animal concepts but should be differentiated from SEX CHARACTERISTICS, anatomical or physiological manifestations of sex, and from SEX DISTRIBUTION, the number of males and females in given circumstances.Eye Foreign Bodies: Inanimate objects that become enclosed in the eye.Eye Movement Measurements: Methods and procedures for recording EYE MOVEMENTS.Risk Factors: An aspect of personal behavior or lifestyle, environmental exposure, or inborn or inherited characteristic, which, on the basis of epidemiologic evidence, is known to be associated with a health-related condition considered important to prevent.Molecular Sequence Data: Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.Ultrasonography: The visualization of deep structures of the body by recording the reflections or echoes of ultrasonic pulses directed into the tissues. Use of ultrasound for imaging or diagnostic purposes employs frequencies ranging from 1.6 to 10 megahertz.Time Factors: Elements of limited time intervals, contributing to particular results or situations.Disease Progression: The worsening of a disease over time. This concept is most often used for chronic and incurable diseases where the stage of the disease is an important determinant of therapy and prognosis.Eye Infections: Infection, moderate to severe, caused by bacteria, fungi, or viruses, which occurs either on the external surface of the eye or intraocularly with probable inflammation, visual impairment, or blindness.Animals, Newborn: Refers to animals in the period of time just after birth.Treatment Outcome: Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series.Age Factors: Age as a constituent element or influence contributing to the production of a result. It may be applicable to the cause or the effect of a circumstance. It is used with human or animal concepts but should be differentiated from AGING, a physiological process, and TIME FACTORS which refers only to the passage of time.Base Sequence: The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence.Telomere: A terminal section of a chromosome which has a specialized structure and which is involved in chromosomal replication and stability. Its length is believed to be a few hundred base pairs.Case-Control Studies: Studies which start with the identification of persons with a disease of interest and a control (comparison, referent) group without the disease. The relationship of an attribute to the disease is examined by comparing diseased and non-diseased persons with regard to the frequency or levels of the attribute in each group.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)Ethnic Groups: A group of people with a common cultural heritage that sets them apart from others in a variety of social relationships.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.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.Tears: The fluid secreted by the lacrimal glands. This fluid moistens the CONJUNCTIVA and CORNEA.Vision, Binocular: The blending of separate images seen by each eye into one composite image.Pursuit, Smooth: Eye movements that are slow, continuous, and conjugate and occur when a fixed object is moved slowly.Multivariate Analysis: A set of techniques used when variation in several variables has to be studied simultaneously. In statistics, multivariate analysis is interpreted as any analytic method that allows simultaneous study of two or more dependent variables.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.European Continental Ancestry Group: Individuals whose ancestral origins are in the continent of Europe.Vision Disorders: Visual impairments limiting one or more of the basic functions of the eye: visual acuity, dark adaptation, color vision, or peripheral vision. These may result from EYE DISEASES; OPTIC NERVE DISEASES; VISUAL PATHWAY diseases; OCCIPITAL LOBE diseases; OCULAR MOTILITY DISORDERS; and other conditions (From Newell, Ophthalmology: Principles and Concepts, 7th ed, p132).Photic Stimulation: Investigative technique commonly used during ELECTROENCEPHALOGRAPHY in which a series of bright light flashes or visual patterns are used to elicit brain activity.Ophthalmology: A surgical specialty concerned with the structure and function of the eye and the medical and surgical treatment of its defects and diseases.Oculomotor Muscles: The muscles that move the eye. Included in this group are the medial rectus, lateral rectus, superior rectus, inferior rectus, inferior oblique, superior oblique, musculus orbitalis, and levator palpebrae superioris.Cohort Studies: Studies in which subsets of a defined population are identified. These groups may or may not be exposed to factors hypothesized to influence the probability of the occurrence of a particular disease or other outcome. Cohorts are defined populations which, as a whole, are followed in an attempt to determine distinguishing subgroup characteristics.Vision, Ocular: The process in which light signals are transformed by the PHOTORECEPTOR CELLS into electrical signals which can then be transmitted to the brain.Questionnaires: Predetermined sets of questions used to collect data - clinical data, social status, occupational group, etc. The term is often applied to a self-completed survey instrument.Conjunctiva: The mucous membrane that covers the posterior surface of the eyelids and the anterior pericorneal surface of the eyeball.Fluorescein Angiography: Visualization of a vascular system after intravenous injection of a fluorescein solution. The images may be photographed or televised. It is used especially in studying the retinal and uveal vasculature.Amino Acid Sequence: The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION.Eyelids: Each of the upper and lower folds of SKIN which cover the EYE when closed.Eye Infections, Fungal: Infection by a variety of fungi, usually through four possible mechanisms: superficial infection producing conjunctivitis, keratitis, or lacrimal obstruction; extension of infection from neighboring structures - skin, paranasal sinuses, nasopharynx; direct introduction during surgery or accidental penetrating trauma; or via the blood or lymphatic routes in patients with underlying mycoses.Photoreceptor Cells, Invertebrate: Specialized cells in the invertebrates that detect and transduce light. They are predominantly rhabdomeric with an array of photosensitive microvilli. Illumination depolarizes invertebrate photoreceptors by stimulating Na+ influx across the plasma membrane.Eye Infections, Parasitic: Mild to severe infections of the eye and its adjacent structures (adnexa) by adult or larval protozoan or metazoan parasites.Eye Pain: A dull or sharp painful sensation associated with the outer or inner structures of the eyeball, having different causes.Strabismus: Misalignment of the visual axes of the eyes. In comitant strabismus the degree of ocular misalignment does not vary with the direction of gaze. In noncomitant strabismus the degree of misalignment varies depending on direction of gaze or which eye is fixating on the target. (Miller, Walsh & Hoyt's Clinical Neuro-Ophthalmology, 4th ed, p641)Eye Evisceration: The surgical removal of the inner contents of the eye, leaving the sclera intact. It should be differentiated from ORBIT EVISCERATION which removes the entire contents of the orbit, including eyeball, blood vessels, muscles, fat, nerve supply, and periosteum.Genetic Predisposition to Disease: A latent susceptibility to disease at the genetic level, which may be activated under certain conditions.Eye Hemorrhage: Intraocular hemorrhage from the vessels of various tissues of the eye.Blood Pressure: PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS.Amplified Fragment Length Polymorphism Analysis: The detection of RESTRICTION FRAGMENT LENGTH POLYMORPHISMS by selective PCR amplification of restriction fragments derived from genomic DNA followed by electrophoretic analysis of the amplified restriction fragments.Macular Degeneration: Degenerative changes in the RETINA usually of older adults which results in a loss of vision in the center of the visual field (the MACULA LUTEA) because of damage to the retina. It occurs in dry and wet forms.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.Blindness: The inability to see or the loss or absence of perception of visual stimuli. This condition may be the result of EYE DISEASES; OPTIC NERVE DISEASES; OPTIC CHIASM diseases; or BRAIN DISEASES affecting the VISUAL PATHWAYS or OCCIPITAL LOBE.Amblyopia: A nonspecific term referring to impaired vision. Major subcategories include stimulus deprivation-induced amblyopia and toxic amblyopia. Stimulus deprivation-induced amblyopia is a developmental disorder of the visual cortex. A discrepancy between visual information received by the visual cortex from each eye results in abnormal cortical development. STRABISMUS and REFRACTIVE ERRORS may cause this condition. Toxic amblyopia is a disorder of the OPTIC NERVE which is associated with ALCOHOLISM, tobacco SMOKING, and other toxins and as an adverse effect of the use of some medications.Polymerase Chain Reaction: In vitro method for producing large amounts of specific DNA or RNA fragments of defined length and sequence from small amounts of short oligonucleotide flanking sequences (primers). The essential steps include thermal denaturation of the double-stranded target molecules, annealing of the primers to their complementary sequences, and extension of the annealed primers by enzymatic synthesis with DNA polymerase. The reaction is efficient, specific, and extremely sensitive. Uses for the reaction include disease diagnosis, detection of difficult-to-isolate pathogens, mutation analysis, genetic testing, DNA sequencing, and analyzing evolutionary relationships.Electroretinography: Recording of electric potentials in the retina after stimulation by light.Telomere Shortening: The loss of some TELOMERE sequence during DNA REPLICATION of the first several base pairs of a linear DNA molecule; or from DNA DAMAGE. Cells have various mechanisms to restore length (TELOMERE HOMEOSTASIS.) Telomere shortening is involved in the progression of CELL AGING.Telomere Homeostasis: Maintenance of TELOMERE length. During DNA REPLICATION, chromosome ends loose some of their telomere sequence (TELOMERE SHORTENING.) Various cellular mechanism are involved in repairing, extending, and recapping the telomere ends.Mutation: Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations.Biomechanical Phenomena: The properties, processes, and behavior of biological systems under the action of mechanical forces.DNA: A deoxyribonucleotide polymer that is the primary genetic material of all cells. Eukaryotic and prokaryotic organisms normally contain DNA in a double-stranded state, yet several important biological processes transiently involve single-stranded regions. DNA, which consists of a polysugar-phosphate backbone possessing projections of purines (adenine and guanine) and pyrimidines (thymine and cytosine), forms a double helix that is held together by hydrogen bonds between these purines and pyrimidines (adenine to thymine and guanine to cytosine).Convergence, Ocular: The turning inward of the lines of sight toward each other.Ophthalmologic Surgical Procedures: Surgery performed on the eye or any of its parts.Models, Biological: Theoretical representations that simulate the behavior or activity of biological processes or diseases. For disease models in living animals, DISEASE MODELS, ANIMAL is available. Biological models include the use of mathematical equations, computers, and other electronic equipment.Head Movements: Voluntary or involuntary motion of head that may be relative to or independent of body; includes animals and humans.Optic Nerve Diseases: Conditions which produce injury or dysfunction of the second cranial or optic nerve, which is generally considered a component of the central nervous system. Damage to optic nerve fibers may occur at or near their origin in the retina, at the optic disk, or in the nerve, optic chiasm, optic tract, or lateral geniculate nuclei. Clinical manifestations may include decreased visual acuity and contrast sensitivity, impaired color vision, and an afferent pupillary defect.Sarcomeres: The repeating contractile units of the MYOFIBRIL, delimited by Z bands along its length.Visual Perception: The selecting and organizing of visual stimuli based on the individual's past experience.Reflex, Vestibulo-Ocular: A reflex wherein impulses are conveyed from the cupulas of the SEMICIRCULAR CANALS and from the OTOLITHIC MEMBRANE of the SACCULE AND UTRICLE via the VESTIBULAR NUCLEI of the BRAIN STEM and the median longitudinal fasciculus to the OCULOMOTOR NERVE nuclei. It functions to maintain a stable retinal image during head rotation by generating appropriate compensatory EYE MOVEMENTS.

Human optical axial length and defocus. (1/93)

 (+info)

Ethnic differences in the prevalence of myopia and ocular biometry in 10- and 11-year-old children: the Child Heart and Health Study in England (CHASE). (2/93)

 (+info)

Hyperopic refractive error and shorter axial length are associated with age-related macular degeneration: the Singapore Malay Eye Study. (3/93)

 (+info)

In vivo measurement of blood velocity in human major retinal vessels using the laser speckle method. (4/93)

 (+info)

Relative peripheral refractive error and the risk of onset and progression of myopia in children. (5/93)

 (+info)

Influence of refractive error and axial length on retinal vessel geometric characteristics. (6/93)

 (+info)

Axial length of myopia: a review of current research. (7/93)

 (+info)

Axial length measurements by contact and immersion techniques in pediatric eyes with cataract. (8/93)

 (+info)

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. ...
TY - JOUR. T1 - Potential source of error in axial length measurement in Pseudophakes [3]. AU - Anderson, Nicholas. AU - Waldron, Rhonda G.. AU - Stulting, R. Doyle. PY - 2001/1/1. Y1 - 2001/1/1. UR - http://www.scopus.com/inward/record.url?scp=0035205693&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=0035205693&partnerID=8YFLogxK. U2 - 10.1016/S0886-3350(01)01244-5. DO - 10.1016/S0886-3350(01)01244-5. M3 - Letter. VL - 27. SP - 1902. EP - 1903. JO - Journal of Cataract and Refractive Surgery. JF - Journal of Cataract and Refractive Surgery. SN - 0886-3350. IS - 12. ER - ...
Keywords: Ocular biometry, Visual function, Gullstrand, Cross section, Dioptric distance Background The optics of the human eye is based on the refractive parameters of the individual ocular structures, each of which is affected differently by age. Well known examples of this are the thickening of the crystalline lens with aging and the gradual flattening of the anterior chamber [1]. Although normal aging has been studied extensively in the literature, some SNX14 studies limit themselves to subsections of the population, such as subjects over 40?years, children, certain nationalities or ethnicities, or DBeq IC50 emmetropes [2C4]. Other studies presented only certain parameters of ocular biometry, or concentrated on prevalence of specific eye conditions (e.g., cataract, AMD) [5, 6]. This study concentrates on various biometric parameters in connection with refraction and retinal measurements with optical coherence tomography (OCT) in a healthy population. Although measurements in healthy eyes ...
Myopia is the eye disorder with the most rapid increase in prevalence worldwide. It develops in childhood with a peak incidence between 13-15 years. Especially high myopia, a refractive error of -6 diopters or more, increases the risk of permanent visual impairment during adulthood due to structural abnormalities of the retina and optic nerve. The causes of myopia are complex. Lifestyle factors in childhood, such as time spent outdoors and close work are risk factors. Moreover, genetic studies have revealed more than many factors associated with myopia. Pharmacological and optical interventions to inhibit myopia progression are becoming increasingly common. The ultimate goal of this thesis was to gain insight into the causes and consequences of childhood myopia. For this purpose we investigated the environmental and genetic factors of myopia, eye growth in children and ocular biometry development in subjects of the Generation R and ALSPAC study. We studied the consequences of high myopia on ...
About seven years ago I took one of the nicest pieces of wood that I have ever had and created a pipe I called the hooded beetle. This was another piece of wood deserving of a shape that highlighted its amazing grain. Using the same idea I reversed the direction of the hooded beetle, and so I have creatively called this the hooded beetle 2. Like its predecessor, this has a bamboo shank and a hand cut German ebonite stem. This pipe though is a semi-churchwarden with its long, four-knuckle shank.. Weight: 1.8 oz.. Chamber Diameter: 11/16″. Length: 8″. Bowl height: 2 1/2″. ...
... of an eye is to measure eye length and the power of the cornea. Get your biometry eye test at Vision Care along with latest technology with immersion technique.
Shen, S.Y., Wong, T.Y., Loo, J.-L., Rosman, M., Aung, T., Wong, W.L., Saw, S.-M., Foster, P.J., Loon, S.-C. (2008). The prevalence and types of glaucoma in Malay people: The Singapore Malay eye study. Investigative Ophthalmology and Visual Science 49 (9) : 3846-3851. [email protected] Repository. https://doi.org/10.1167/iovs.08- ...
Aim: To determine the correlation between Ocular axial length (AL) and body mass index (BMI) in a black population.. Methods: This was a descriptive cross sectional study carried out in Port Harcourt City LGA, Nigeria. Subjects were selected using multistage random sampling with inclusion criteria of Visual Acuity , 6/18, age greater than 18 years with no history of past ocular surgeries or trauma. Socio demographic data was obtained through an interviewer based structured proforma. Data obtained included age, sex, tribe, occupation and level of education. Weight, height and Body Mass Index (BMI) were measured using a standard height and weight automated scale (SECA 769,220). Ocular examinations done included visual acuity, applanation tonometry and ophthalmoscopy. Axial length (AL) was measured using Amplitude (A) scan ultrasonography (SONOMED PACSCAN 300AP). Data obtained from one eye of the subjects were analyzed using SPSS (Version 17), and p value was set at ≤ 0.05.. Results: Four hundred ...
The strengths of our study include standardized protocols for obtaining refraction and lens opacity measurements. There are some limitations to this study that may have affected the results. First, our study is cross-sectional in nature and the temporality of myopia and cognitive dysfunction is not clear. Second, only ethnic Malay adults were examined in this study and the findings may vary in other ethnic groups. Third, although the AMT is a well-validated screening instrument for cognitive impairment, 34 misclassification may occur, likely biasing OR estimates toward the null hypothesis and inflating their SEs, 35 thereby making actual associations more difficult to detect. Fourth, there may be residual confounding due to factors that we have not controlled for (e.g., depressive symptoms, general well-being, and status of Alzheimers disease or Parkinsons disease), and categorization of continuous exposure variables (e.g., education level, hours of reading/writing). Fifth, the current sample ...
Purpose: : To determine choroidal thickness in normal eyes using optical coherence tomography (OCT) and to evaluate association between choroidal thickness and age, axial length and gender. Methods: : Spectral domain OCT images (Bioptigen, Bioptigen, inc., Durham, NC) were obtained in 293 eyes of 157 healthy volunteers without retinal diseases. The choroidal thickness at the fovea was manually measured from the outer border of the retinal pigment epithelium to the chorioscleral interface. Only the images with acceptable quality to visualize chorioscleral interface were included. The IOL master (Carl Zeiss Meditech) was used to measure the axial length of the eye. Statistical analyses using paired t-test and Pearson correlation were performed to evaluate the correlation between choroidal thickness and age, axial length, and gender. Results: : The mean and median age of the 157 subjects were 33.3 and 29 years old, respectively (range, 7 to 83 years). There were 60 males and 97 females. Of the 293 ...
This will be a library of Dr. Francis Youngs research papers. A List of Franks Papers: TITLES BEING ADDED: Title, Document #, Number of Pages Ocular Biometry. Y, 2, 287-292 Eskimo Error Refractive Transmission. Y, 5, 276-285 The Effect of Restricted Visual Space on the Primate Eye. Y, 15, 367-374 The Distribution of Refractive Errors…
Aim: To assess the accuracy and signal quality of axial length measurements by partial coherence laser interferometry (PCI) for optical biometry in eyes with conventional silicone oil (SO) or heavy silicone oil (HSO) as endotamponade.. Methods: We included 26 eyes with SO endotamponade (SO, n = 15; HSO, n = 11) using a Zeiss IOLMaster for measurement of axial length the day before and at least 6 weeks after SO removal. We analysed the intra-individual deviation between both measurements and signal-to-noise ratio (SNR) as a marker for signal quality. We included 16 contralateral eyes without history of vitreoretinal surgery to act as the control group.. Results: The mean axial length was 24.76 (SD 2.07) mm (SO 24.63 (SD 2.12) mm, HSO 24.93 (SD 2.10) mm, control 24.95 (SD 2.61) mm) before and 24.75 (SD 1.96) mm after oil removal with a mean intra-individual deviation of 0.13 (SD 0.11) mm (SO 0.13 (SD 0.12) mm, HSO 0.13 (SD 0.09) mm, control 0.02 (SD 0.01) mm) while SNR at baseline was 5.7 (SD 3.5) ...
Results The mean choroidal thickness at the fovea prior to smoking was 301.1±63.1 μm, which decreased to 284.2±56.7 μm at 1 h and 270.8±80.0 μm at 3 h following smoking (p=0.001). The mean choroidal thickness was significantly decreased following smoking at all five extrafoveal points. The difference in choroidal thickness was not statistically significant at 1 and 3 h of smoking at all six points. In the control group, the mean baseline choroidal thickness at the fovea was 270.6±57.9 μm, which was 272.5±52.4 μm at 1 h and 273.8±57.4 μm at 3 h (p=0.816).. ...
0070] Transthoracic Echocardiography in conscious mice was performed using Sequoia Acuson C256 (Malvern, Pa.) ultrasound machine, equipped with a frequency bandwidth of 15 MHz (Am J Physiol, 1999. 277(5 Pt 2): p. H1967-74; Cancer Res, 2003. 63(20): p. 6602-6). The two-dimensional (2-D) and M-mode echocardiogram were obtained in the parasternal short and long axis view of the left ventricle (LV) at the level of the papillary muscles and sweep speed of 200 mm/sec. Using the M-mode echocardiogram image, four parameters were measured: (i) left ventricular posterior wall thickness at end of diastole (LVPWD), (ii) interventricular septa) thickness at end of diastole (IVSD), (iii) left ventricle (LV) chamber diameter at end of diastole (LVEDD), and (iv) left ventricle chamber diameter at end of systole (LVESD). All measurements were performed according to the guidelines set by the American Echocardiography Society. For each mouse, three to five values for each measurement were obtained and averaged for ...
38 eyes from 38 patients with acute NAION (less than 14 days of initial symptom), 38 uninvolved fellow eyes and 76 eyes from 38 healthy age and sex matched subjects were included at a single academic hospital. Choroidal thickness was measured by enhanced depth imaging (EDI) of spectral domain optical coherence tomography (SD-OCT). Peripapillary choroidal thickness was measured at 1000 and 1500 microns from bruck´s membrane opening (BMO) at the superior, inferior, temporal, and nasal directions, using horizontal and vertical raster scans, centreed at optic nerve head. Subfoveal choroidal thickness was measured on horizontal raster scan at centre, and 500 microns apart in temporal and nasal sides. Ganglion cell-inner plexiform complex layer was measured using automated segmentation tool of OCT device. Statistical analyses were used to compare choroidal thickness among NAION eyes, uninvolved fellow eyes and control eyes ...
4) subjects will be randomly assigned to one of four groups, consisting of 60 subjects each, each group will be assigned one of four study spectacles.. The study spectacles for all participants will have the optimal lens corrections for both eyes.. Group 1 participants will wear spectacles with lenses tinted to blocks red light.. Group 2 participants will wear spectacles with lenses that have a holographic diffuser on surface of and that are tinted to reduce the light intensity by the same amount that the red-blocking tint does.. Group 3 participants will wear spectacles that are tinted to block red light and that have a holographic diffuser.. Group 4 participants will wear spectacles that are tinted to reduces the light intensity by the same amount that the red-blocking tint does.. Participants will wear the study glasses for 18 months. Axial length measurements will be taken twice prior to when subjects begin wearing the glasses and once every three month thereafter. ...
In cataract surgery, vision is improved by replacing the eyes own cloudy lens with a new clear intraocular lens (IOL). IOLs come in different powers and sizes to compensate for each patients individual needs. For best vision after cataract surgery, precise measurements must be taken to determine which IOL to implant.. The Lenstar LS900 is an efficient painless test, performed by a technician in Dr. Lanes office.. Payment is not covered by OHIP, and is due at the time of the Lenstar exam. A receipt for health insurance or tax purposes will be issued. Methods of payment include Interac, VISA, or Mastercard.. ...
Biometrics are an integral part of the modern FinTech landscape and this was reflected in the panels, keynotes, showcases and conversations at Money20/20...
The impact of pregnancy on the choroid is still under investigation. The aim of this study is to compare choroidal thickness measurements of healthy pregnant women in the third trimester and healthy non-pregnant women using spectral-domain optical coherence tomography (OCT). This cross-sectional study included 122 eyes of 61 women, divided into two groups: 27 healthy pregnant women in the third trimester and 34 age-matched healthy non-pregnant women. Choroidal thickness was measured using Enhanced Depth Imaging OCT at ten different locations: at the fovea and every 500 µm from the fovea up to 2500 µm temporally and up to 2000 µm nasally. There were no significant differences in the ten measurements of choroidal thickness comparing both groups. Mean subfoveal choroidal thickness was 304.1 + 9.6 µm in the control group and 318.1 + 15.6 µm in the pregnant women group (p = 0.446). There was also no statistically significant association between gestational age and choroidal thickness measurements in the
Changes in axial length and choroidal thickness after intraocular pressure reduction resulting from trabeculectomy Shinichi Usui,1,2 Yasushi Ikuno,2 Sato Uematsu,1 Yuko Morimoto,1 Yoshiaki Yasuno,3 Yasumasa Otori11National Hospital Organization, Osaka National Hospital, Osaka, Japan; 2Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan; 3Computational Optics Group, University of Tsukuba, Tsukuba, JapanPurpose: To evaluate changes in axial length and choroidal thickness after trabeculectomy.Patients and methods: Fourteen patients under 80 years of age with glaucoma, were enrolled. The choroid was imaged using prototypical high-penetration optic coherence tomography (OCT) and the thickness was measured. Axial length, choroidal thickness, and intraocular pressure (IOP) were measured bilaterally at 3 pm 1 day before and 6 days after trabeculectomy. The choroidal thickness was measured at the fovea and four other locations (2 mm superior, temporal, inferior, and nasal to
Myopia progression is the progressive increase in the amount of nearsightedness in children due to eyeball elongation (axial elongation).
The fishery is also important to the national economy and contributes to improving the trade balance. In 2012, this sector contributed 7.5% towards the GDP of the primary sector and 2.2% towards the total GDP. It also generates direct and indirect jobs for 17% of the working population. Of note is the fact that the impacts of climate change have caused many farmers to turn to the fishery for their livelihoods. This has led to an increase in the numbers of artisanal fishermen while also threatening fishery resources. In some aquatic environments, in addition to resources being overexploited, new environmental conditions have been created by certain activities (for example, the establishment of dams in the Senegal River delta zone has favored the proliferation of certain species, such as Typha domingensis). In marine and coastal ecosystems, the high value placed on certain species, overfishing and an increase in population along the coast are negatively impacting resources (such factors have led ...
3D swept-source OCT detected FCE in 9 eyes (7.8 %). The 3D scanning protocol ‎allowed for detection of small extrafoveal excavations and the 3D segmentation method ‎coupled with en-face scans allowed for clear visualization of the morphology of the ‎excavations. In 5 eyes with FCE, unusual choroidal tissue was detected beneath the ‎FCE, bridging between the bottom of FCE and the outer choroidal boundary. In addition, ‎three of those five eyes showed a suprachoroidal space below the FCE, as if the outer ‎boundary of choroid is pulled inward by this bridging tissue. FCE was often seen within ‎the leakage point and choroidal hyperpermeability. Eyes with FCE were more myopic ‎‎(-4.42 ± 2.92 diopters), and the subfoveal choroidal thickness was significantly thinner ‎‎(301.3 ± 60.1 µm), as compared to control CSC eyes (P = .001 and .036 respectively ...
The Library actively supports the Universitys mission by providing integrated and timely access to high quality scholarly resources, an inspiring environment for intellectual growth and discovery, with responsive and outreaching services... [read more ]. ...
Health,(PRWEB) September 13 2013 The Global Biometrics Technology Market (2010-2015) - Market Forecast by Products End-User Application and Geography analyzes the biometrics market by different biometrics technologies and applications and studies the major market drivers restraints and opportunities in regions such as North America Asia Europe and Rest of Worl,Biometrics,Technology,Market,(Biometric,Devices,,Biometric,Products,,Biometric,Fingerprint,Equipment),Worth,$11,229.3,Million,in,2015,-,New,Report,by,MarketsandMarkets,medicine,medical news today,latest medical news,medical newsletters,current medical news,latest medicine news
In Vivo Distraction Force and Length Measurements of Growing Rods: Which Factors Influence the Ability to Lengthen? Noordeen, Hilali M.; Shah, Suken A.; Elsebaie, Hazem B.; Garrido, Enrique; Farooq, Najma; Al Mukhtar, Mohannad Spine. 36(26):2299-2303, December 15, 2011.
This website uses cookies to improve your experience. Well assume youre ok with this, but you can opt-out if you wish.Accept Reject Read More ...
However, as we think about the possible structures that data may take up, it is clear that the matter may be far more complex. For instance, the moment that our data are in more than two or three dimensions, the moment, in other words, that more than three variables describe each point in our data, we have difficulty in recognising what the data show. And the moment that the data take up forms in which groups ... ...
PURPOSE: Proper refractive eye growth depends on several features of the visual image and requisite retinal pathways. In this study, we determined the contribution of rod pathways to normal refractive development and form deprivation (FD) myopia by testing Gnat1-/- mice, which lack functional rods due to a mutation in rod transducin-α. METHODS: Refractive development was measured in Gnat1-/- (n = 30-36) and wild-type (WT) mice (n = 5-9) from 4 to 12 weeks of age. FD was induced monocularly from 4 weeks of age using head-mounted diffuser goggles (Gnat1-/-, n = 9-10; WT, n = 7-8). Refractive state and ocular biometry were obtained weekly using a photorefractor, 1310 nm optical coherence tomography, and partial coherence interferometry. We measured retinal dopamine and its metabolite, DOPAC, using HPLC. RESULTS: During normal development, the refractions of WT mice started at 5.36 ± 0.68 diopters (D) and became more hyperopic before plateauing at 7.78 ± 0.64 D. In contrast, refractions in ...
The effect of myopic defocus on myopia progression was assessed in a two-year prospective study on 94 myopes aged 9{14 years, randomly allocated to an undercorrected group or a fully corrected control group. The 47 experimental subjects were blurred by approximately +0.75 D (blurring VA to 6/12), while the controls were fully corrected. Undercorrection produced more rapid myopia progression and axial elongation (ANOVA, F(1,374)=14.32, p,0.01). Contrary to animal studies, myopic defocus speeds up myopia development in already myopic humans. Myopia could be caused by a failure to detect the direction of defocus rather than by a mechanism exhibiting a zero-point error ...
This prospective, cross-sectional and comparative study include 31 eyes of 31 patients with nanophthalmos and 31 eyes of 31 healty subjects (control group). Subfoveal choroidal thickness and central macular thicness (CMT) were measured with spectral domain optical coherence tomography (SD-OCT) (Spectralis, Heidelberg Engineering) with enhanced depth imaging (EDI) and fast macular thickness mode. Also, all participants underwent a standardised ocular examination including central corneal thickness (CCT), anterior chamber depth (ACD), refractive errors measurements ...
Ophthalmic Exams Optical Coherence Tomography Visual Acuity Test Digital Fundus Photography Fluorescein Angiography Axial Length Measurement
Over the years, a range of different environmental factors have been proposed as potentially playing a role in human myopia development, with factors related to near-work, education and academic achievement being a major focus of many studies.[6] More recently, perhaps spurred on by the sometimes equivocal findings of studies examining the association between myopia and near work, a shift in the focus of refractive error research has occurred, with a move away from traditional near work measures and a broader focus on additional potential environmental factors (e.g. outdoor activities).[7] Evidence has been emerging from both human epidemiological studies, and research with animals, that ambient light exposure may be an important additional environmental factor that plays a role in myopia. Animal studies demonstrate that normal eye growth appears to be influenced by environmental light levels, since rearing young chickens in dim ambient light environments has been shown to result in more rapid ...
... Introduces new corporate product offerings and international distribu... markets. ...JERICHO N.Y. Aug. 18 /- bioMETRX Inc. (OTCB...Sequiam Biometrics (Pty) Ltd. now bioMETRX S.A. is a leadingprovid...,bioMETRX,,Inc.,Acquires,Assets,of,Sequiam,Biometrics,(Pty),Ltd.,biological,biology news articles,biology news today,latest biology news,current biology news,biology newsletters
In Kantarci FA, Tatar MG, Uslu H, et al. A Pilot Study of Choroidal Thickness in Chronic Smokers. Retina 2016;36:986-991, Dr. Emine Esra Karaca was incorrectly added as a co-author. Dr. Karaca did not assist with this paper in any way and does not wish to be associated with the article. ...
Learn about Florida International University biometrics. As the entrance requirements for engineering programs vary, learn about the various specialization options available.
just curious if taking a blood thinner would help move gear throughout your body faster instead of sitting in the injected area for a period of time aching ?
Having trouble viewing this email? View it as a Web page. You are subscribed to CDCs Immunizations Hepatitis B Coordinators email subscription service. This email serves to inform you that the contact information for the state of California has been updated and is now available. The CDC has reached over 1.3 million subscribers. Thank you…
A new study revealed that artificial sweeteners may be causing weight gain and other health issues. An expert claims that these sweeteners disturb the bodys ability to count calories and might simulate hunger.
Using a 10-MHz ultrasound transducer, by the immersion method, the typical accuracy for axial length measurements is within 0.12 mm. This results in approximately 0.28 D of post-operative refractive error in an eye of average axial length. This error would be more for a shorter eye and less for a longer eye. However, the total refractive error involves all components of the measurement process and is closer to 0.36 D, taking into account keratometry, a 2-variable IOL power calculation formula and the configuration of the capsulorrhexis. A-scan biometry by immersion will display an axial length somewhat longer than applanation, because there is no corneal compression and the displayed axial length is closer to the true axial length. The difference between applanation and immersion can be anywhere between 0.14 mm to 0.28 mm depending on the degree of corneal compression. Upon implementing immersion A-scan ultrasonography, it is best to aim for a -0.75 D target refraction and start with the IOL ...
The growing eyes of children necessitate tha pediatric ophthalmologists acquire sufficient knowledge of the basics of pediatric ocular biometry and IOL power calculations. The tools for calculation of keratometry, axial length and intraocular lens power are same as that of an adult eye but implantation of IOL in growing eyes needs under-correction and titration of…
Recent studies show the no prescription cialis value of performing an oral glucose tolerance test in all patients. Parents in primary care agreed that all 10 statements were important. To report the relationship between different optical ocular components and the influence of axial length on emmetropization.. IND (2.7 microM) decreased the contractions to both compounds and this was reversed with 2.8-7 nM PGE1. In 33 of 48 volunteers, two doses of vaccine induced antibodies that neutralized the homologous strain HIV-1/MN. Many aspects of the quiescence program as well as the mechanisms governing the entry and exit from quiescence remain poorly side effects for cialis understood. The purified protein has very low levels of RNase contamination and functioned normally in a variety of activity assays. The survey included 13 validated questions (eight on constipation and purchasing cialis on the internet five on incontinence) and was used to exclude subjects with pathological constipation or ...
Effect of Day Length on Eye Growth, Myopia Progression, and Change of Corneal Power in Myopic Children Dongmei Cui, MD, PhD, Klaus Trier, MD, Søren Munk Ribel-Madsen, MSc, PhD Objective Bec...
Behavioral Biometrics: A Biosignal Based Approach: 10.4018/978-1-60566-725-6.ch005: Behavioral biometrics is a relatively new form of authentication mechanism which relies on the way a person interacts with an authentication device.
Ensure that the classification is hip of economic and strengthen resources within the community and refer them to the Patriotic Kidney Foundation. After all this conflict has been handled close to the Hopf corps about noting that the experiments reported in the papers of 2002a and 2004 very tenable had hushed MEG signals compared to those arising in the 2000 paper. Medicine tests loosely price in the $50-$70 [url=http://thewelcomecentre.org/documents/practice7/mode3/]cheap 25mg clomid with amex[/url] breast cancer backgrounds. Nickla DL, Wildsoet C, Wallman J (1998) The circadian timing in intraocular stress, axial at long last, and choroidal thickness in a primate original percipience flowering, the plain marmoset. It is generally not a enigma because of older children because the bacteria do not grow well in refine intestines necessary to the presence of the normal intestinal flora. Videos for the treadmills are the classes in seeable metier ...
Information about Suffolk University biometrics. Completion of an accredited engineering program can qualify you to enter the workforce as a paid intern immediately.
Information about Copiah-Lincoln Community College biometrics. Engineering job offers command high salaries due to accelerating technical innovation in manufacturing and heavy industry.
Objective: To describe a new computer-assisted method to measure retinal vascular caliber over an extended area of the fundus. Methods: Retinal photographs taken from participants of the Singapore Malay Eye Study (n = 3280) were used for this study. Retinal vascular caliber was measured and summarized as central retinal artery equivalent (CRAE) and central retinal vein equivalent (CRVE) using a new semi-automated computer-based program. Measurements were made at the Standard zone (from 0.5 to 1.0 disk diameter) and an Extended zone (from 0.5 to 2.0 disk diameter). Results: Reliability of retinal vascular caliber measurement was high for the new Extended zone (intraclass correlation coefficients >0.90). Associations of CRAE with blood pressure were identical between the Extended and Standard zones (linear regression coefficient -2.53 vs. -2.61, z-test between the two measurements, p = 0.394). Associations of CRAE and CRVE with other cardiovascular risk factors were similar between measurements ...
Purpose: To determine the choroidal thickness (CT) profile in keratoconus (KC) patients using swept-source optical coherence tomography (SS-OCT). Methods: This was a prospective, cross-sectional study. One hundred two eyes of 52 KC patients were studied using Pentacam and SS-OCT. The macular CT profile was created by manually measuring the distance between the retinal pigment epithelium and the choroid-sclera junction on horizontal b-scans at nine different macular locations. The results were compared to 93 eyes of 93 healthy controls. Results: Mean age of the KC group was 34.9 ± 13.5 years and mean axial length (AL) was 24.1 ± 1.3 mm. Mean topographic KC classification (TKC) was 2.0; 39 eyes were classified as early KC (TKC ,1-2), 34 eyes as moderate (TKC 2, 2-3), and 29 as advanced (TKC 3+). Mean subfoveal CT was 383.2 μm in KC patients and 280.5 μm in control group (P , 0.001). CT in KC patients was statistically thicker in all measure locations (P , 0.001). CT in KC eyes decreased with ...
Purpose:: We determined the accuracy of the inferior , superior , nasal , temporal (ISNT) neuroretinal rim area rule and its variants in adult Asian populations, and evaluated whether disc area impacts its performance characteristics. Methods:: Participants in the Singapore Malay Eye Study (SiMES) and Singapore Indian Eye Study (SINDI) underwent standardized ocular examinations, including optic disc imaging with the Heidelberg retinal tomograph (HRT). Glaucoma was defined using the ISGEO criteria. HRT rim areas in the superior, inferior, nasal, and temporal quadrants were quantified. We determined sensitivity, specificity, and positive (PPV) and negative (NPV) predictive values of violating the ISNT rule and 4 variants (I , S , T, I , S, I , T, and combined I , T and S , T). The influence of disc area was analyzed with multivariate marginal logistic regression. Results:: There were 6112 participants (mean age: 57.6 ± 10.3 years). Glaucoma was present in 194 individuals (3.2%). Among 11,840 ...
The global e-coat market, on the basis of type, is segmented into cathodic epoxy, cathodic acrylic, anodic, and so on. E-coat, better known as"electro-coat", comes across as an immersion technique wherein electrically charged particles are deposited out of a water suspension for coating a conductive part. The voltage applied controls coat thickness. E-coat technique is employed for uniform coating of exterior and interior surfaces. Organic compound products that are less volatile are used in e-coat as they give off no hazardous air pollutants. An additional environmental advantage of e-coat materials is that they produce very less solid waste compared to the other coating techniques. The e-coat market has witnessed moderate growth in 2015 and it is expected to continue with the same in the years to come. Housing and construction sector coupled with refurbishment trends act as the main market drivers of e-coat market; thanks to the growing demands for commercial apartments, educational ...
Advancements in the eye industry have made it possible for people with low Myopia to temporarily correct their vision through Ortho-k.
In the early 1960s, a group of clinicians asserted that myopia could be reduced and possibly corrected by fitting specially designed contact lenses to induce corneal flattening and thereby reduce the refractive power of the eye. This technique, known as orthokeratology, required that the lenses be fitted and then changed progressively until vision becomes normal or nearly normal. Advocates of orthokeratology claimed that corneal changes could be induced in a predictable fashion, were often permanent, and occurred without causing any adverse effects to the cornea. Data on orthokeratology were generally limited, poorly documented, and did not address the issues of control or failure.. The Berkeley Orthokeratology Study was a single center randomized, concurrently controlled, masked clinical trial. Corneal and visual changes in an orthokeratology treatment group were monitored and compared with those observed in a control group whose members wore contact lenses fitted in a standard clinical manner. ...
Purpose : To determine the relationship between refractive errors and ocular components values in carpet weavers Methods : Refractive errors and ocular components values were investigated on carpet weavers at Mashhad city in Iran . After selection of samples, the individuals who had ophthalmic and systemic disease effective on the refractive errors were ...
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/LCI. a/LCI, which is outlined in detail in references ( 11, 12), obtains depth-resolved measurements of the far-field diffraction of a biological sample, which corresponds to a cell monolayer in the present study. Low coherence interferometry permits the rejection of multiply scattered light that can cause noise artifacts in the signal. The signal resulting from an a/LCI measurement is processed to isolate the scattering from individual cell nuclei and all smaller organelles in the ensemble while eliminating contributions from long range correlations within the monolayer ( 24). The processed nuclear scattering profile is then analyzed using an inverse light scattering analysis (ILSA) algorithm to determine the properties of the nucleus (shape, size, etc.). Traditional ILSA algorithms for analyzing scattering from biological samples have generally used Mie theory, a model of spherical scatterers; however, in the present study, the ILSA algorithm uses a T-matrix light scattering model ( 25), ...
Advancements in the eye industry have made it possible for people with low Myopia to temporarily correct their vision through Ortho-k.
my right eye size has become bigger than the left eye. morning there is slight swelling. it is there for the last 5 years. it does not create ant visibility problem. what could be the reason This d...
Advil, also known as Ibuprofen, is a mild blood thinner with effects that last for several hours after the medication has been taken, according to Spine-Health. As a result, Advil may reduce the...
Purpose: To compare refraction and ocular biometry in European Caucasian children aged 6-7 years and 12-13 years living in Sydney, Australia and Northern Ireland. Methods: All children had a comprehensive eye examination, including cycloplegic (cyclopentolate 1%) autorefraction (Sydney; Canon RK-F1, Northern Ireland; Shin-Nippon SRW-5000) and ocular biometry (IOLMaster, Carl Ziess). Hyperopia was defined as a right spherical equivalent refraction (SER) of ≥+2.00 dioptres (D), myopia as ≤-0.50D and astigmatism as a cylindrical error of ≥1.00D.Results: The mean SER was similar at age 6-7 yrs (p=0.9), however, at 12-13 yrs, children in Northern Ireland had a significantly less hyperopic mean SER (+0.66D) than children in Sydney (+0.83D, p=0.008). The prevalence of myopia, hyperopia and astigmatism was significantly greater in Northern Ireland than Sydney at both ages (all p ,0.03). The distribution of refraction was highly leptokurtic in both samples, but less so in Northern Ireland ...
Macular edema is a common cause of visual loss at uveitic patients. The aim of our study was to investigate retinal and choroidal thickness at the macula in anterior (AU) and intermediate (IMU) uveitis and in healthy individuals using spectral domain optical coherence tomography (SD-OCT). Case-control study of 21 patients with AU and 23 patients with IMU and 34 age-matched healthy controls was performed with Spectralis SD-OCT (Heidelberg Engineering, Germany). High resolution SD-OCT scans and macular mapping were applied for automated measurement of retinal thickness. Standardized, masked manual measurement of the choroidal thickness was performed in the center of the ETDRS fields on enhanced depth imaging (EDI) scans. Evaluation of central retinal subfield thickness, 3 mm and 6 mm perifoveal rings was performed in the corresponding ETDRS zones in patient groups. The mean central retinal subfield thickness was significantly higher in IMU (368.65 ± 115.88 μm, p = 0.0003), but not significantly
Refractive errors occur when there is a mismatch between the axial length of an eye and its refractive power, which is produced by the cornea, lens and anterior chamber depth. When the axial length matches the optical power, without accommodation, the images of distant objects are focused sharply on the photoreceptors and the eye is emmetropic. However, if the eyes axial length becomes longer than the focal plane, the images are focused in front of the retina and the eye is myopic. Juvenile-onset myopia affects a significant fraction of the worlds population [1]. As shown by studies in animal models (fish, chicks, monkeys, guinea pigs, tree shrews, and other species) [2-6] and humans [7], an emmetropization mechanism uses visual signals during the early postnatal period to guide the axial elongation rate (primarily the vitreous chamber depth) so that the retina comes to be located close to the focal plane, typically producing eyes that are slightly hyperopic. The emmetropization mechanism can ...
With todays modern science and extensive use of top-of-the-line medical apparatus, there are many ways to revive impaired eyesight. Orthokeratology is one method of restoring normal vision. What exactly is this? Who are the patients who undergo this procedure?. Definition. Orthokeratology is more commonly known as Ortho-K. The main principle of this process is to fix the shape of the cornea. That way, the retina would be able to interpret light properly so that vision could be repaired.. This may sound too clinical but it is actually a non-surgical procedure. What happens is that when physicians prescribe this procedure to patients, they are asked to wear specially-designed contact lenses which should reshape the eyes curvature.. Process. Patients are requested to undergo several tests which determine the exact needs. That way, the right lenses which have the perfect fit will be given. Orthokeratology does not take much effort from the patient. The contact lenses have to be worn before going ...
Orthokeratology definition, a technique for correcting refractive errors in vision by changing the shape of the cornea with the temporary use of progressively flatter hard contact lenses. See more.
At Zacks Eye Clinic in central London we have optometrists who specialise in Orthokeratology treatment, fitting orthokeratology contact lenses, for overnight vision correction.
Orthokeratology involves the use of specially designed rigid gas-permeable contact lenses to alter the shape of the cornea in order to reduce or correct myopia.
The prevalence of myopia in developed countries in East and Southeast Asia has increased to more than 80% in children completing schooling, whereas that of high myopia has increased to 10%-20%. This poses significant challenges for correction of refractive errors and the management of pathological high myopia. Prevention is therefore an important priority. Myopia is etiologically heterogeneous, with a low level of myopia of clearly genetic origins that appears without exposure to risk factors. The big increases have occurred in school myopia, driven by increasing educational pressures in combination with limited amounts of time spent outdoors. The rise in prevalence of high myopia has an unusual pattern of development, with increases in prevalence first appearing at approximately age 11. This pattern suggests that the increasing prevalence of high myopia is because of progression of myopia in children who became myopic at approximately age 6 or 7 because age-specific progression rates typical of ...
Primary Care Optometry News | Maximum plus correction P. Sarita Soni, OD, MS: My recommended correction for a child whose myopia is progressing rapidly very much depends on the refractive and accommodative status as well as the maturity demonstrated by the child. While I carefully evaluate the accommodative status, I am not inclined to use bifocal glasses or contact lenses. I believe that the evidence for the use of bifocal
Advancements in the eye industry have made it possible for people with low Myopia to temporarily correct their vision through Ortho-k.
Andy Morgenstern, OD, and Walt Whitley, OD, MBA, debate whether available data provide reliable guidance for optometrists seeking to stave off myopia progression in children, and review how real-world experiences may provide more useful information on the effectiveness of such treatments.
Buy accessories for your a-scan here. Probes & probe handle extensions, footswitches, immersion extension sets and immersion shells.
Financial Biometrics Month continues at FindBiometrics with a look at biometric banking - the concept, the modalities and the deployments.
Myopia Control can guarantee improvements in your childrens schooling, activities, and ultimate success. Discover more about myopia control at our practice. Call: 208-504-0600
Tartuntatautien tilastollinen mallintaminen, kevät 2006 (Statistical Modelling of Infectious Disease Data, in Finnish, spring 2006 ...
Axial Length of the eye affects exophthalmometer reading. Pseudoproptosis may be seen in severe myopia. "Exophthalmometer in ... "Myopic proptosis and the associated changes in axial components of the eye". Zhonghua Yan Ke Za Zhi. 43 (6): 525-9. PMID ... Exophthalmometers can also identify enophthalmos (retraction of the eye into the orbit), a sign of blow-out fracture or certain ... Exophthalmometer is an instrument used for measuring the degree of forward displacement of the eye in exophthalmos. The device ...
Axial myopia is attributed to an increase in the eye's axial length.[50] ... Scleral buckles, used in the repair of retinal detachments may induce myopia by increasing the axial length of the eye.[61] ... Because the most significant cause of myopia is the increase in axial length of the eye, the retina must stretch out to cover ... with eyes getting shut", from μύειν myein "to shut the eyes" and ὤψ ōps "eye, look, sight" (GEN ὠπός ōpos).[120][121][122][123] ...
"Ultrasonic observation of eyes in premature babies. Part 6: Growth curves of ocular axial length and its components (author's ... Human eyes are formed in such a way that each eye reflects a stimulus at a slightly different angle thereby producing two ... Newborn's eyes move in the same direction only about half of the time. The strength of eye muscle control is positively ... sensitivity to bright light Constant eye turning Strabismus Nystagmus Amblyopia Photophobia Tumor in the eye Cataract Eye exam ...
The power of phakic lens is independent of the axial length of the eye. Rather it depends on central corneal power, anterior ... Both eyes can usually be done on the same day. Steroid antibiotic eye drops are usually prescribed for 2-4 weeks after surgery ... This is in contrast to intraocular lenses that are implanted into eyes after the eye's natural lens has been removed during ... A phakic intraocular lens (PIOL) is a special kind of intraocular lens that is implanted surgically into the eye to correct ...
... can reach 25 centimetres (10 in) in length and 10 cm (4 in) in width. The pygidium and the cephalon are about ... Pseudogygites has short genal spines and small compound eyes located in the center of the cephalon with the glabella in between ... The pygidium contains faint pleural furrows and no axial rings. Pseudogygites is found in late Ordovician oil shales in New ...
Refractive error, axial length, and relative peripheral refractive error before and after the onset of myopia. Investigative ... National Advisory Eye Council of the National Eye Institute (NEI)/National Institutes of Health (2000-04); Study Chair for the ... Between-eye asymmetry in keratoconus. Cornea. 2002;21:671-9. Walline JJ, Jones LA, Mutti DO, Zadnik K. A randomized trial of ... Normal eye growth in emmetropic schoolchildren. Optometry and vision science : official publication of the American Academy of ...
... is the length of the eye (mm). The SRK II formula adjusts the A constant utilized depending on the axial length: increasing the ... Eye's axial length (AL) Corneal power (K) Postoperative IOL position within the eye known as estimated lens position (ELP) The ... While this is a convenient way to determine the axial length for most normal eyes, errors in measurement almost invariably ... This relationship is changed in LASIK eyes. Most IOL power formulas use the axial length and keratometric reading (K) to ...
The visual surface of the eye is rather small (about 20% of the length of the cephalon), with the front about halflength of the ... with the front straight and confluent with the eye ridges. The occipital ring is about as wide as the border and the axial ... consisting almost fully of the axis and post axial boss, with two vaguely defined axial rings. During the ontogenetic ... anterior of the visual surface is parallel to the midline or converges slightly forward and from the back of the eye diverges ...
... reduction in eye axial length, and narrow iridocorneal angles. Eyes from individuals with angle-closure glaucoma (ACG) often ... The clinical features of this condition include extreme hyperopia due to short axial length with essentially normal anterior ... The gene is located on long arm of chromosome 2 (2q37.1). The encoded protein is 603 amino acid residues in length with a ... The fundus of the eye shows crowded optical discs, tortuous vessels and an abnormal foveal avascular zone. Mice homozygous for ...
The optics of the eye including its refractive power and axial length also play a major role in retinal image size. Aniseikonia ... The person then closes one eye, and then the other. The person should notice that the target appears larger to the eye that it ... Eyes in the Storm-President Hopkins' Dilemma: The Dartmouth Eye Institute, Norwich, Vermont: Norwich Book Press, p. 288 ... having significantly different refractive errors between each eye) or antimetropia (being myopic (nearsighted) in one eye and ...
Axial myopia is attributed to an increase in the eye's axial length. Refractive myopia is attributed to the condition of the ... Because the most significant cause of myopia is the increase in axial length of the eye, the retina must stretch out to cover ... Anatomically, the changes in axial length of the eye seem to be the major factor contributing to this type of myopia. Diurnal ... Scleral buckles, used in the repair of retinal detachments may induce myopia by increasing the axial length of the eye. Index ...
... difference has been hypothesized to originate from a natural decrease in cone density with the increase in eye axial length ... While it is able to image the retina in real time, it has issues with reflections from eye astigmatism and the cornea. Eye ... Analysis of cone packing density before AOSLO was only possible on mounted eyes from eye donor banks. As this method could not ... Bessho K, Fujikado T, Mihashi T, Yamaguchi T, Nakazawa N, Tano Y. Photoreceptor images of normal eyes and of eyes with macular ...
On observation for increasing axial length was one of the salient features of Marfan syndrome also resulting in TGF-β supported ... deficiency of LRP1 which was responsible to perturbation of TGF-β regulation and might cause abnormal ECM remodeling in the eye ... PCR-restriction fragment length polymorphism technique is used for genotyping of LRPAP1 intron 5 insertion/deletion. The ...
Later procedures focused on modifying the axial length of the eye, by preventing elongation and staphyloma progression by ... Eye. Ward, B., Tarutta, E., & Mayer, M. (2009). The efficacy and safety of posterior pole buckles in the control of progressive ... in early literature aimed at shortening the length of the eyeball by resecting a ring of sclera from the equator of the eye. ... Eye, 23(12), 2169-2174. Thompson, F., Scleral Reinforcement. Chapter 10., in Myopia Surgery. 1990, Macmillan: New York. p. 267- ...
... whenever the disparity between the two eyes is due to a difference in axial length of the eyes. When a refractive error is ... Knapp's Rule states that lenses placed at the anterior focal point of the eye, generally 15 mm in front of the eye, will create ... One difficulty, then, in prescribing glasses to an individual with a disparity in refractive error between the two eyes is that ... a disparity in image size between the two eyes may be created. There is some controversy as to the soundness of Knapp's Rule.. ...
This condition of the normal eye is achieved when the refractive power of the cornea and the axial length of the eye balance ... "Photorefractive Keratectomy (PRK) Eye Surgery" Mutti, DO (2005). "Axial Growth and Changes in Lenticular and Corneal Power ... Either myopic (near-sighted) eyes or hyperopic (far-sighted) eyes would score worse, e.g. 20/40 (visual acuity roughly half ... such as an eye chart test). For example, on a Snellen chart test, emmetropic eyes score at "6/6"(m) or "20/20"(ft) vision, ...
Eye color: 0.59(0.01) Eye dimensions (axial length & corneal curvature): 0.46(0.16)/0.42(0.16) Cilantro tasting: 0.087 cry ... "Coordinated Genetic Scaling of the Human Eye: Shared Determination of Axial Eye Length and Corneal Curvature", Guggenheim et al ... "Estimating Telomere Length Heritability in an Unrelated Sample of Adults: Is Heritability of Telomere Length Modified by Life ... nasal bridge length: 0.456(0.142) palpebral fissure length (average): 0.208(0.140) upper facial depth (average): 0.419(0.136) ...
... proved that myopia is largely due to an excessive axial length, published influential textbooks on eye disease, and ran annual ... Book of the Ten Treatises of the Eye Chinese Ophthalmology Copiale cipher Eye care professional Eye color Eyeglasses Optometry ... He and his contemporaries further put forth the existence of three tubes leading from the eye, not one. One tube from each eye ... Ophthalmology training equips eye specialists to provide the full spectrum of eye care, including the prescription of glasses ...
Thin eye ridges swing back from the front of the glabella to the small, outwardly-bowed eyes. The free cheeks (or librigenae) ... The semi-circular tail-piece (or pygidium) has six axial rings that decrease in size backwards and four or five pairs of ... The cephalon, thorax and pygidium are of approximately equal length. Olenoides serratus is one of about twenty species of which ...
The ostrich has the largest eye of any land vertebrate, with an axial length of 50 mm (2 in), twice that of the human eye. Bird ... Nocturnal birds have eyes optimised for visual sensitivity, with large corneas relative to the eye's length, whereas diurnal ... a tough white collagen fibre layer which surrounds the rest of the eye and supports and protects the eye as a whole. The eye is ... The shorter focal length of shearwater eyes give them a smaller, but brighter, image than is the case for pigeons, so the ...
Axial sculpture is absent or feebly developed. The aperture is ovate. The columellar margin is smoot. The outer lip has a ... The eyes are located externally near the base of cylindrical tentacles. The radula formula is 1-0-R-0-1 The duplex radular ... This family consists of moderately sized shells, usually between 20 and 30 mm, but in Nihonia maxima the length of shell can ...
Particular risk factors are younger age, male sex, longer axial length, and complications during surgery. In the highest risk ... The eye is numbed with either a subtenon injection around the eye (see: retrobulbar block) or topical anesthetic eye drops. The ... The eye is usually patched on the day of surgery and use of an eye shield at night is often suggested for several days after ... Cited in Five-Year Agenda for the National Eye Health Education Program (NEHEP), p. B-2; National Eye Institute, U.S. National ...
The eyes of Nectocaris would have had a similar visual acuity to modern Nautilus (if they lacked a lens) or squid (if they did ... Nectocaris had a flattened, kite-shaped body with a fleshy fin running along the length of each side. The small head had two ... Muscle blocks surrounded the axial cavity, and are now preserved as dark blocks in the lateral body. The fins also show dark ... It has an ovate trunk region and a large muscular foot, and a head with stalked eyes and a pair of long tentacles. The trunk ...
... since axial length and keratometry readings do not reveal a corneal or length basis for a myopic shift. It is usually ... Severe cases can result in cell damage and death, with effects most often seen in the central nervous system, lungs and eyes. ... Anderson Jr, B; Shelton, DL (1987). "Axial length in hyperoxic myopia". In: Bove, Alfred A; Bachrach, Arthur J; Greenbaum, Leon ... Oxidative damage to the eye may lead to myopia or partial detachment of the retina. Pulmonary and ocular damage are most likely ...
The relative length of the eye lobe decreases during ontogeny, although only slightly in larger specimens. Also the length of ... A postule in the middle of each axial ring may be present. Frontal margin perpendicular to the midline, but gradually curling ... Eyes lunar shaped, ⅓-¼ as long as the glabella, back perpendicular to the front of the occipital ring, midlength about as far ... From the front of the eye the facial suture is directed forward and outward at ±30°, only to curve abruptly forward and inward ...
The facial suture in front of the eye is long and strongly divergent, while the portion behind the eye isshort. The genal spine ... The area in front of the glabella is relatively long (about ⅓× the length of the glabella), and not differentiated into a ... The pygidial axis is short, with 1 axial ring. The surface is smooth. "Anabaraspis". Global Names Index. Retrieved 2015-01-04. ...
Kidney problems can have significant impact on quality and length of life, and so psychological support, health education and ... These may include Medical ultrasonography/ultrasound, computed axial tomography (CT), scintigraphy (nuclear medicine), ...
In cross-section, the petioles are rounded on the axial side and individually ribbed on the axial side. The tails of juvenile ... Around noon on the first day of the cycle the scabbard inflorescence opens up to ½ to ⅔ of its length, allowing the insects to ... Getting the juice of the plant into the eye causes burning and tearing. Contact plants from the mucous membranes of the mouth ... Leaf petioles always form a distinct, wide vagina, with a length reaching from the middle to almost the top of the tail. The ...
Project: Effects of Myopic Defocus on Choroidal Thickness and Axial Length. Frank Thorn, OD, PhD, NECO. Projects: Peripheral ... Current Eye Research 2002;24(4):289-95. Books & book chapters:. *Vera-Díaz FA and Doble N. The Human Eye and Adaptive Optics. ... Project: Effects of Myopic Defocus on Choroidal Thickness and Axial Length. Catherine Johnson, OD, FAAO, NECO. Projects: ... Project: Effects of Myopic Defocus on Choroidal Thickness and Axial Length. Frances Rucker, MCOptom, PhD, NECO. ...
THE A SCAN - This employs ultrasound Biometry ( The length of the Eye is measured using emitted sound ). This is done so that ... Using the corneal interpretation and the axial A scanned length in a formula the Final IOL or intra ocular lens power is ... What Do Your Eyes Say About Your Health?. Have you ever wondered why your eye care provider spends so much time carefully ... Rule of thumb when in doubt assume very long and short eyes cause imaging inaccuracies. Resultant A scanned lengths will ...
... physiology and diseases of the eye. Submissions should focus on focusing on new diagnostic and surgical techniques, instrument ... axial length of vitreous (VAL), axial length of eye (EAL), ciliary body thickness (CBT), choroidal thickness (CT), and retinal ... Effect of Hemodialysis on Eye Coats, Axial Length, and Ocular Perfusion Pressure in Patients with Chronic Renal Failure. Ling ... HD impacts the thickness of the eye coats and the vitreous axial length, including the thickness of the ciliary body, choroid, ...
Abstract The cornea of one eye was opacified in two young macaque monkeys by multiple stromal injections of a suspension of ... Increase in axial length of the macaque monkey eye after corneal opacification.. ... so that after 1 year it was more than 1 mm longer than the normal eye. This difference in axial length was due to elongation of ... The result of this experiment demonstrates that opacification of the corneal has effects on axial length similar to, although ...
Accuracy and reproducibility of axial length measurement in eyes with silicone oil endotamponade ... Accuracy and reproducibility of axial length measurement in eyes with silicone oil endotamponade ... Results: The mean axial length was 24.76 (SD 2.07) mm (SO 24.63 (SD 2.12) mm, HSO 24.93 (SD 2.10) mm, control 24.95 (SD 2.61) ... Methods: We included 26 eyes with SO endotamponade (SO, n = 15; HSO, n = 11) using a Zeiss IOLMaster for measurement of axial ...
Results: : Axial length ranged between 20.80 and 22.5mm in 11 eyes, between 22.51 and 25.0mm in 11 eyes and between 25.01 and ... and axial length in a sample of healthy eyes. Methods: : RNFL thickness was measured by CirrusTM HD-OCT in 39 eyes of 39 ... M. Carbonelli, G. Savini, P. Barboni; Retinal Nerve Fiber Layer Thickness Changes According to Axial Length in Healthy Eyes. ... Retinal Nerve Fiber Layer Thickness Changes According to Axial Length in Healthy Eyes ...
The effect of segmental scleral buckling on corneal astigmatism and axial length of the eye: A biomechanical model ... The effect of segmental scleral buckling on corneal astigmatism and axial length of the eye: A biomechanical model ... The effect of segmental scleral buckling on corneal astigmatism and axial length of the eye: A biomechanical model. Invest. ... known that circumferential scleral buckles typically result in induced myopia by increasing the axial length of the human eye. ...
... eyes. CONCLUSIONS Axial length measurements using applanation A-scan US and IOLMaster in eyes with CSME differ statistically ... PARTICIPANTS Twenty-three healthy eyes of 23 participants and 21 eyes with CSME of 21 diabetic outpatients. METHODS The authors ... Mean AL by US and IOLMaster in healthy eyes was 23.17+/-1.07 mm (range, 21.17-25.18) and 23.25+/-1.10 mm (range, 21.17-25.26), ... This is likely a result of the fundamentally different methodology of the 2 methods in measuring eyes with a pathologically ...
Axial length a factor in phaco of microphthalmos, nanophthalmos eyes. by Healio ophthalmology • 2013/01/31. • 0 Comments ... according to a study.The retrospective analysis included 103 eyes with axial length less than 21 mm that underwent ... Despite a series of challenges and risks, phacoemulsification with IOL implantation proved safe in eyes with microphthalmos and ... Endocrinology Diagnostics Emergency Medicine ENT Exclusive Eye Health / Blindness Family Medicine/Primary Care Genetics ...
In the nondeprived eyes, the vitreous chamber depth and axial length were reduced after uPA treatment, whereas PAI-1 increased ... In the form-deprived eyes, uPA inhibited vitreous depth and axial length elongation, but PAI-1 had no effect. CONCLUSIONS The ... in the form-deprived eye and the effect of this growth factor on scleral cell proliferation and axial length. METHODS Change in ... were administered to determine the effect of TGF-beta activation on the axial length in normal and FDM eyes. RESULTS The ...
Simple method of determining the axial length of the eye. By photographing the corneal reflex in two positions of gaze and ... The measurements obtained in this way showed a high correlation with refraction in a series of 80 eyes. The axial length ... Simple method of determining the axial length of the eye. Full Text available with Trip Pro. ... Eye Signs of Neurological Disorders Full Text available with Trip Pro. Eye Signs of Neurological Disorders The author discusses ...
Axial hyperopia results when the length of the eye is too short for the eye to properly focus distance objects on the retina ... Hyperopia can be caused by the eye being too short (axial hyperopia) or by the cornea being too flat or the crystalline lens ... Emmetropization is the process by which the eye actively adjusts various components of the eye to gradually improve the focus ... If an abnormally short eye has resulted in hyperopia, exposing such an eye to retinal images partially located behind the ...
Logistic regression analysis revealed a significant influence of axial length in violation of the ISNT rule in the normal eye ... The ISNT rule should be cautiously applied when evaluating normal eyes with long axial lengths. In addition, the ISNT rule ... Seventy-seven normal eyes and 97 glaucomatous eyes were included in the study. The ISNT rule was intact in 59 (76.6%) of the ... Factors Affecting ISNT Rule Satisfaction in Normal and Glaucomatous Eyes.. Moon J1,2, Park KH1,2, Kim DM1,2, Kim SH1,3. ...
Ophthalmology Instrument from Eye Hospital Equipment Acd Lens Body Length Axial Length a/B Scanner - Xuzhou Kaixin Electronic ... China Eye Hospital Equipment Acd Lens Body Length Axial Length a/B Scanner, Find details about China Ophthalmology Equipment, ... Eye Hospital Equipment Acd Lens Body Length Axial Length a/B Scanner ... Eye Hospital Equipment Acd Lens Body Length Axial Length a/B Scanner. ...
Such anticipated reduction may be also applicable to eyes with moderate and long axial length. Phacoemulsification may also ... Such anticipated reduction may be also applicable to eyes with moderate and long axial length. Phacoemulsification may also ... axial length was not significantly associated with IOP reduction after cataract surgery in normal eyes [8]. Additionally, from ... the change among the group with shorter axial length ,22 mm (n=23 eyes) relatively raised from a preoperative value of 14.4 ( ...
Molecular analysis of CHX10 and MFRP in Chinese subjects with primary angle closure glaucoma and short axial length eyes.. Aung ... Molecular analysis of CHX10 and MFRP in Chinese subjects with primary angle closure glaucoma and short axial length eyes ... Molecular analysis of CHX10 and MFRP in Chinese subjects with primary angle closure glaucoma and short axial length eyes ... The mean axial length was 21.90+/-0.50 mm (range 19.98-22.50 mm). We identified a possible disease-causing variant in CHX10 (c. ...
Axial Length, Eye. The distance between the anterior and posterior poles of the eye, measured either by ULTRASONOGRAPHY or by ... infection of the posterior part of the eye. From the hyperreflective inflammatory cells and deposits in the vitreous and on the ... When a reflective site in the sample is at the same optical path length (coherence) as the reference mirror, the detector ... To determine the early signs of posterior staphylomas in highly myopic eyes of younger subjects by swept-source ultra-widefield ...
Axial length (sum). -. 3158.2. ±. 21.6. ±. 3.0. ±. 6.2. ±. 5.0. Axial length (group). 1.4330. 3268.5. ±. 22.8. ±. 3.4. ±. 5.9. ... The axial length (AL) of eye was defined as the distance in the axial direction from the fitted anterior corneal surface (ACS) ... C. H. Chong, T. Suzuki, K. Totsuka, A. Morosawa, and T. Sakai, "Large coherence length swept source for axial length ... Image registration identified a cyclic axial shift of the eye with time [Fig. 3 ], which would heavily offset any slow axial ...
Axial myopia is attributed to an increase in the eyes axial length.[50] ... Scleral buckles, used in the repair of retinal detachments may induce myopia by increasing the axial length of the eye.[61] ... Because the most significant cause of myopia is the increase in axial length of the eye, the retina must stretch out to cover ... with eyes getting shut", from μύειν myein "to shut the eyes" and ὤψ ōps "eye, look, sight" (GEN ὠπός ōpos).[120][121][122][123] ...
The preoperative visual acuity was 20/80 with an axial length of 25.4 mm. The orbital examination was unremarkable. Eye drops ... His eyes were moving under the closed lids in a manner similar to rapid eye movement sleep and continued to move when the eyes ... The axial length was 23 mm. She had a normal intraocular pressure (IOP). Her only regular medications were atenolol and ... He had noticed this on the day after surgery as soon as he removed the eye pad. The visual acuity was now counting fingers with ...
Gene Therapy Restores Mfrp and Corrects Axial Eye Length.. Velez G, Tsang SH, Tsai YT, Hsu CW, Gore A, Abdelhakim AH, Mahajan M ...
The results of immersion A-B-scan axial length measurement in eyes with dense cataract. Search Title by author or title ... This study is to determine the accuracy of the axial length (AL) measurement methods in patients with dense cataract using ... Helmholtz Moscow Research Institute of Eye Diseases, Moscow, Russia Methods: This was a retrospective analysis of 130 eyes with ...
Proptosis results from increased axial length of the globe.. Thyroid eye disease is the result of an autoimmune process that is ... MRI of the brain and orbits showed posterior staphyloma and increased axial length of the left globe (Figure 4). No abnormal ... MRI of the brain and orbits showed posterior staphyloma and increased axial length of the left globe. ... In the setting of severe myopia with a marked difference in refractive error between the two eyes, this is suggestive of ...
Axial eye length measurement using coherence revival and extended imaging depth Muzammil A. Arain ... Increased vessel length index in deep retinal layer angiography en face slabs via convolutional neural networks Warren Lewis ... Together, we had the chance to address the challenges eye care specialists are facing along every step of a patients journey. ... Peripheral refraction and eye shape measurements using methods based on clinical retinal imaging Conor Leahy ...
See biometry of the eye; axial length of the eye.. Fig. U1 Histogram of ultrasound reflections (or echoes) in the eye. Echoes ... The technique is used to make biometric measurements such as the axial length of the eye, the depth of the anterior chamber, ... The velocity of the ultrasound waves in the eye is approximately 1550 m/s (it is 1641 m/s in the lens and 1532 m/s in the ... The silicone probe, which rests on the eye, is separated from the transducer by a water column to segregate the noise from the ...
  • Dr. Vera-Diaz currently investigates the effect of various aspects of visual functioning on myopia development and progression, including fixational eye movements in outdoor and indoor environments, the interaction between central and peripheral vision, and various cues for accommodation on real 3D targets. (neco.edu)
  • A 75-year-old woman who only had prior ocular care from an optometrist presented to our clinic for a gradual decrease of vision in both eyes. (healio.com)
  • The screening and routine medical eye care programs helped in detecting early the ocular problems allowing best possible remedy. (sjopthal.net)
  • No difference was found between hypermetropic anisometropic and healthy eyes regarding ocular biometric parameters and corneal biomechanical properties. (oftalmoloji.org)
  • Fundus examination of her right eye was remarkable only for advanced thinning of the rim of the optic disc of both the superior and inferior quadrants and a cup-disc ratio of 0.80. (healio.com)
  • Fundus examination of her left eye revealed severe generalized cupping of the optic disc with cup-disc ratio of 0.95 (Fig. 1A ) and macular as well as a large nasal area of retinoschisis (Fig. 1B ). (healio.com)
  • Clinical characteristics and benefit of cataract intervention amongst UK domiciliary eye care recipients. (aston.ac.uk)
  • On follow up, the patient was found to have a secondary cataract in his right eye with inferior posterior synechiae and a fibrotic capsule adhered to the iris. (thefreelibrary.com)
  • Since Jupiter has a small axial tilt of only 3.13 degrees, it has little seasonal variations. (nineplanets.org)
  • The results from molecular dynamics simulations suggest that the oligothiophene conjugate part of the spin label interacts with hydrophobic residues of the amyloid protein through hydrophobic attraction and that both the N-O bond length and the N-O out-of-plane tilt angle in the nitroxide group are slightly diminished after complexation with the protein. (faintpower.tk)
  • On examination of both eyes, intraocular pressures were 19 mm Hg before dilation and 15 mm Hg after dilation. (healio.com)
  • A 50-year-old white man with a history of progressive vision loss and elevated intraocular pressure (IOP) in both eyes was referred to our hospital. (biomedcentral.com)
  • In total, 16 (34.0%) eyes required enucleation after RT. (allenpress.com)
  • 1CM would have led to selection of an undersized plaque in 41% of cases compared to 2CM and would have misclassified half of all eyes that actually required enucleation. (biomedcentral.com)
  • Ultrasound biomicroscopy (UBM) showed that the angle in both eyes was narrowed 360 degrees circumferentially without an evidence of plateau iris formation and uveal effusion. (biomedcentral.com)
  • The centrifugal-axial-flow compressor is a combination of the two, with operating characteristics of both. (docme.ru)
  • However, there is little consensus between studies in entry points, sagittal, and axial trajectories of the screws. (cureus.com)
  • Frogs are scientifically identified by the structure of their long posterior limbs, a petite framework, webbed fingers and feet, budged eyes and the lack of a tail. (edu.au)
  • B-scan revealed a posterior staphyloma in the left eye. (thefreelibrary.com)
  • also narrows in two epithelial destruction is applied in the saphenous vein compresses posterior wall into small, painful, and cons long length of this. (bookzseo.com)
  • Spike height is not only affected by the difference in density as it travels through the eye but also by the angle of incidence, which is determined by the probe orientation to the visual axis. (medscape.com)
  • Our model we can be partially paralysed eye because the motor pathways anywhere eg hydroxocobalamin, sodium interacts with corneal sensitivity. (vmwaredevotee.com)
  • Pellets tracking along with the presence of burn, not be competent to put the cinema, dilating eye-drops or nuclear division of imatinib, or common and preparing the head of bleeding. (gaiaenergysystems.com)
  • Next week in Part IV of Can We Cure Nearsightedness, we will discuss diluted Atropine eye drops. (cockrelleyecare.com)
  • The recent literature vantin 200 mg without a prescription antibiotic eye drops for stye, however generic vantin 200 mg with amex virus 5 hari, seems to extend indications vantin 200 mg on-line virus 3d, the only restriction being the surgeon's experience buy vantin 200mg on-line antibiotics for acne for sale. (bikinglasvegas.com)
  • Humphrey visual field testing demonstrated a dense superior arcuate scotoma and inferior temporal paracentral field defect in the left eye. (healio.com)
  • The axial motion of the EGJ was reduced in the fundoplication and hiatal hernia patients. (faintpower.ga)
  • Sixty-four eyes of 32 patients followed with the diagnosis of hypermetropic anisometropia-related ambliyopia were included in the study. (oftalmoloji.org)
  • Group 1 (n=32) consisted of eyes with hypermetropic anisometropia, and group 2 (n=32) consisted of healthy eyes of the same patients. (oftalmoloji.org)
  • Thirty-nine patients with 70 affected eyes were identified. (allenpress.com)
  • Ultrasounds were obtained for all patients, and axial length (AL) was measured for a subset of patients. (biomedcentral.com)
  • Gonioscopy revealed slightly narrow but not occludable angles and visual significant nuclear sclerotic cataracts were noted in both eyes. (healio.com)
  • The FDT is the ideal visual field screening device because it conducts supra-threshold testing in only 35 seconds per eye. (alpinevision.com)
  • A 33-year-old male presented with decreased visual acuity in the left eye. (edu.lb)
  • The BU formula had the highest proportion of eyes within 0.25D(34%) and 0.5D(62%) of predicted at 1-month. (ranzcoabstracts.com)
  • The SRK/T formula had the highest proportion of eyes within 1D(91%) of predicted at 1-month. (ranzcoabstracts.com)
  • In vivo analysis of ciliary muscle morphologic changes with accommodation and axial ametropia. (aston.ac.uk)
  • The average of both eyes or the value of the remaining eye were used for association analysis. (arvojournals.org)
  • B) Color Photograph of the Left Eye Revealing a Superior Nasal Schisis Cavity (arrow). (healio.com)
  • The specificity of the defect depends on the time of onset, the dose, and the length of the pulse of ethanol. (jove.com)
  • A CT scan uses X-rays and computer technology to make horizontal, or axial, images (often called slices) of the body. (oumedicine.com)
  • Exposure to ethanol was initiated at dome stage (~4.3 hours post fertilization, hpf) for the desired length of time, up to a 24 hr pulse. (jove.com)