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Definition
| ability of the eye to adjust focus on near objects |
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Definition
| decreased vision in early life because of a functional defect that can occur as a result of strabismus, refractive errors (when one eye is more nearsighted, farsighted, or astigmatic than the other), or trauma; usually occurs in one eye; also known as lazy eye |
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| antibiotic ophthalmic solution |
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Definition
| antimicrobial agent in solution; used to treat bacterial infections |
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Definition
| absence of the lens, usually after cataract extraction |
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Definition
| watery liquid secreted by the ciliary processes that fills the anterior and posterior chambers of the eye and provides nourishment for the cornea, iris, and lens |
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Definition
| distorted vision caused by an oblong or cylindrical curvature of the lens or cornea that prevents light rays from coming to a single focus on the retina |
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Definition
| inflammation of the eyelid |
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Definition
| surgical repair of an eyelid |
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Definition
| drooping of the eyelid; usually caused by paralysis |
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Definition
| involuntary contraction of the muscles surrounding the eye causing uncontrolled blinking and lid squeezing |
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Definition
| duct in the anterior that carries filtered aqueous humor to the veins and bloodstream |
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Definition
| opaque clouding of the lens causing decreased vision |
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Definition
| excision of a cloudy lens from the eye |
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Definition
| chronic nodular inflammation of a meibomian gland, usually the result of a blocked duct; commonly presents as a swelling on the upper or lower eyelid |
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Definition
| vascular layer beneath the sclera that provides nourishment to the outer portion of the retina |
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Term
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Definition
| ring of tissue behind the peripheral iris that is composed of ciliary muscle and ciliary processes |
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Term
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Definition
| smooth muscle portion of the ciliary body, which contracts to assist in near vision |
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Term
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Definition
| cone-shaped cells within the retina that are color sensitive and respond to bright light |
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Term
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Definition
| mucous membrane that lines the eyelids and outer surface of the eyeball |
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Definition
| pinkeye; inflammation of the conjunctiva |
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Term
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Definition
| small, plastic, curved disk with optical correction that fits over the cornea; used to correct refractive errors |
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Definition
| transparent, anterior part of the eyeball covering the iris, pupil, and anterior chamber that functions to refract (bend) light to focus a visual image |
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Definition
| use of intense cold to seal a hole or tear in the retina; used to treat retina; used to treat retinal detachment |
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Definition
| disease of the retina in diabetics characterized by capillary leakage, bleeding, and new vessel formation (neovascularization) leading to scarring and loss of vision |
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Definition
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Definition
| measure of the ability to see the details and shape of identifiable objects from a specified distance, usually from 20 feet (6 meters); normal distance visual acuity is 20/20 (6/6) |
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Definition
| outward turning of the rim of the eyelid |
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Definition
| inward turning of the rim of the eyelid |
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Definition
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Definition
| right or left eye deviates inward, toward nose |
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Definition
| abnormal protrusion of one or both eyeballs |
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Definition
| right or left eye deviates outward, away from nose |
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Term
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Definition
| introduction of a medicated solution in the eye, usually administered by a drop (gt) or drops (gtt) in the affected eye or eyes |
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Definition
| washing of the eye with water or other fluid |
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Term
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Definition
| pinpoint depression in the center of the macula lutea that is the site |
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Term
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Definition
| interior surface of the eyeball, including the retina, optic disk, macula, and posterior pole |
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Term
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Definition
| oil glands surrounding the eyelashes |
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Term
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Definition
| group of diseases of the eye characterized by increased intraocular pressure that results in damage to the optic nerve, producing defects in vision |
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Term
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Definition
| sty; an acute infection of a sebaceous gland of the eyelid |
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Term
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Definition
| farsightedness; difficulty seeing close objects when light rays are focused on a point behind the retina |
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Term
| intraocular lens (IOL) implant |
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Definition
| implantation of an artificial lens to replace a defective natural lens |
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Definition
| colored circle; colored part of the eye located behind the cornea that contracts and dilates to regular light passing through the pupil |
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Definition
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| excision of a portion of iris tissue |
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| incision into the iris (usually with a laser) to allow drainage of aqueous humor from the posterior to anterior chamber; used to treat a type of glaucoma |
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| corneal transplantation; replacement of a disease or scarred cornea with a healthy one from a matched donor |
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| tubes that carry tears to the lacrimal sac |
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Term
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Definition
| gland located in the upper outer region above the eyeball that secretes tears |
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Definition
| structure that collects tears before emptying into the nasolacrimal duct |
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Definition
| use of a laser to make incisions or destroy tissues; used to create fluid passages or obliterate tumors, aneurysms, etc. |
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Term
| laser-assisted in situ keratomileusis (LASIK) |
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Definition
| a technique using the excimer laser to reshape the surface of the cornea to correct refractive error (e.g. myopia, hyperopia, and astigmatism) |
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Definition
| transparent structure behind the pupil that bends and focuses light rays on the retina |
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Definition
| capsule that encloses the lens |
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Definition
| central region of the retina; responsible for central vision; yellow pigment provides its color |
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Definition
| breakdown or thinning of the tissues in the macula, resulting in partial or complete loss of central vision |
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Definition
| agent that causes the pupil to contract |
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Definition
| agent that causes dilation of the pupil; used for certain eye examinations |
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Definition
| nearsightedness; difficulty seeing distant objects when light rays are focused on a point in front of the retina |
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Definition
| involuntary, rapid, oscillating movement of the eyeball |
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Definition
| use of an ophthalmoscope to view the interior of the eye |
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Definition
| exit site of retinal nerve fibers as well as entrance point for retinal arteries and exit point for retinal veins |
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Definition
| moveable, protective fold that opens and closes, covering the eye |
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Definition
| extreme sensitivity to, and discomfort from, light |
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Definition
| impaired vision caused by old age or loss of accommodation |
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Definition
| an eye in which the natural lens is replaced with an artificial lens implant |
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Definition
| fibrous, wing-shaped growth of conjunctival tissue that extends onto the cornea, developing most commonly from prolonged exposure to ultraviolet light |
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Term
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Definition
| black, circular opening in the center of the iris through which light passes as it enters the eye |
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Term
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Definition
| innermost layer that perceives and transmits light to the optic nerve |
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Term
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Definition
| inflammation of the retina |
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Term
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Definition
| separation of the retina from the underlying epithelium, disrupting vision and resulting in blindness if not repaired surgically |
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Term
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Definition
| rod-shaped cells within the retina that respond to dim light |
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Definition
| tough, fibrous, white outer coat extending from the cornea to the optic nerve |
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Definition
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Definition
| use of a tabletop microscope used to examine the eye, especially the cornea, lens, fluids, and membranes |
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Definition
| use of high-frequency sound waves to detect pathology within the eye (e.g., foreign bodies and detached retina) |
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Definition
| a condition of eye misalignment caused by intraocular muscle imbalance |
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Definition
| use of a tonometer to measure intraocular pressure, which is elevated in glaucoma |
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Term
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Definition
| jelly-like mass filling the inner chamber between the lens and retina that gives bulk to the eye |
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Definition
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Definition
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Definition
| conjunctiva (to join together) |
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