MA-70 Ch 10

ability of the eye to adjust focus on near objects

decreased vision in early life because of a functional defect that can occur as a result of strabismus, refractive errors, or trauma; usually occurs in one eye; also known as a lazy eye

absence of the lens, usually after cataract extraction

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

inflammation of the eyelid

surgical repair of an eyelid

drooping of the eyelid; usually caused by paralysis

involuntary contraction of the muscles surrounding the eye causing uncontrolled blinking and lid squeezing

opaque clouding of the lens causing decreased vision

mucous membrane that lines the eyelids and outer surface of the eyeball

pinkeye; inflammation of the conjunctiva

• 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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pert. to the cornea

lacrimal sac; structure that collects tears before emptying into the nasolacrimal duct

excision of a lacrimal sac

inflammation of the tear sac

double vision

outward turning of the rim of the eyelid (tropo = turning)

inward turning of the rim of the eyelid

excision of an eyeball

right or left eye deviates inward, toward nose

abnormal protrusion of one or both eyeballs (also exophthalmus)

group of diseases of the eye characterized by increased intaocular pressure that results in damage to the optic nerve, producing defects in vision

• sty; an acute infection of a sebaceous gland of the eyelid
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• farsightedness; difficulty seeing close objects when light rays are focused on a point behind the retina
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excision of a portion of the iris tissue

a puncture made through the iris without removing any iris tissue

colored circle; colored part of the eye located behind the cornea that contracts and dilates to regulate light passing through the pupil

inflammation of the iris

inflammation of the cornea

corneal transplantation; replacement of a diseased or scarred cornea with a healthy one from a matched donor

incision of the cornea

pert. to the tears

secretion of tears

• nearsightedness; difficulty seeing distant objects when light rays are focused on a point in front of the retina
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pert. to the nose and the lacrimal apparatus

inflammation of the eye

physician who specializes in the treatment of disorders of the eye

the study of the eye and its diseases

any disease of the eye

use of an ophthalmoscope to view the interior of the eye

pert. to sight or the eye

use of ultrasound to shatter and break up a cataract, with aspiration and removal

extreme sensitivity to, and discomfort from, light

impaired vision caused by old age or loss of accommodation

an eye in which the natural lens is replaced with and artificial lens implant

black, circular opening in the center of the iris through which light passes as it enters the eye

innermost layer that perceives and transmits light to the optic nerve

inflammation of the retina

any noninflammatory retinal damage or disease

• tough, fibrous, white outer coat extending from the cornea to the optic nerve
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inflammation of the sclera

a condition of eye misalignment caused by intraocular muscle imbalance (also called = heterotropia)

use of a tonometer to measure intraocular pressure, which is elevated in glaucoma

• misdirected eyelashes that rub on the conjunctiva or cornea
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