Eye (Med Terms)

watery liquid secreted at the ciliary body that fills the anterior and posterior chambers of the eye and provides nourishment for the cornea, iris, and lens.

vascular layer beneath the sclera that provides nourisment to the outer portion of the retina

ring of muscle behind the peripheral iris that controls the power of the lens

smooth muscle portion of the ciliary body, which contracts to assist in near-vision capability

joining together; mucous membrane that lines the eyelids and outer surface of the eyeball

transparent, anterior part of the eyeball covering the iris, pupil, and anterior chamber that functions to refract light to focus a visual image

gland located in the upper outer region above the eyeball that secretes tears

tubes that carry tears to the lacrimal sac

central region of the retina responsible for central vision; yellow pigment provides its color

passageway for tears from the lacrimal sac into the nose

innermost layer that perceives and transmits light to the optic nerve

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

tough, fibrous, white outer coat extending form the cornea to the optic nerve

jelly-like mass filling the inner chamber between the lens and retina that gives bulk to the eye

eyestrain

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

double vision

abnormal protrusion of one or both eyeballs

secretion of tears

involuntary, rapid oscillating movement of the eyeball

extreme sensitivit to, and discomfort from, light

blind spot in vision

farsightedness; difficulty seeing close objects when light rays extend beyond the proper focus on the retina

nearsightedness; difficulty seeing distant objects when light rays fall short of the proper focus on the retina

imparied vision owing to old age loss accommodation

drooping of the eyelid usually caused by paralysis

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.

opaque clouding of the lens causing decreased vision

pinkeye; inflammation of the conjunctiva

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

sty; an acute infection of a sebaceous gland of the eyelid

inflammation of the cornea

breakdown or thinning of the tissues in the macula, resulting in partial or complete loss of central vision

separation of the retina from the underlying epithelium, disrupting vision and resulting in blindness if not repaired surgically

inflammation of the eyelid

inflammation of the retina

inflammation of the sclera

misdirected eyelashes that rub on the conjunctiva or cornea

laser-assisted in situ keratomileusis- technique using the excimer laser to reshape the surface of the cornea to correct refractive errors such as myopia, hyperopia, and astigmatism

intraocular lens implant- implantation of an artificial lens to replace a defective natural lens

agent that causes dilation of the pupil

agent that causes the pupil to contract