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Stack #54634

Medical- The Eye Vocab

worddefinition
accommodation the process whereby the eyes make adjustments for seeing objects at various distances. These adjustments include constriction(narrowing) or dilation(widening) of the pupil, movement of the eyes, and changes in the shape of the lens.
convergence the simultaneous inward movement of both eyes (toward each other), usually in an effort to maintain single binocular vision as an abject comes nearer
ectropion the eversion of the edge of the eyelid
entropion the inversion of the edge of the eyelid
anisocoria a condition in which the pupils are unequal in size. This may be congenital (present at birth) or caused by a head injury, aneurysm, or pathology of the central nervous system
cataract the loss of transparency of the lens. This may be congenital (present at birth) or caused by trauma (injury) or disease; however, the formation of most cataracts is associated with ageing
nystagmus an involuntary, constant, rhythmic, movement of the eyeball
glaucoma characterized by increased intraocular pressure. If untreated this pressure damages the optic nerve and causes the loss of peripheral vision and eventually blindness
diplopia also known as double vision; the perception of two images of a single object
nyctalopia also known as night blindness; is a condition in which the individual has difficulty seeing at night
presbyopia describes the changes in the eyes that occur with aging
strabismus also known as squint; is a disorder in which the eyes cannot be directed in a parallel manner toward the same object
esotrophia also known as cross-eyes; is strabismus characterized by an inward deviation of one eye in relation to the other
exotropia also known as wall-eye; is strabismus characterized by an inward deviation of one eye in relation to the other
astigmatism a condition which the eye does not focus properly because of unequal curvatures of the cornea
hyperopia also known as farsightedness; is a defect in which light rays focus beyond the retina.
myopia also known as nearsightedness; is a defect in which light rays focus in front of the retina.
Created by: cmb8989