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EYE TERMINOLOGY

QuestionAnswer
Increase in optical power by the eye in order to maintain a clear image (focus) as objects are moved closer accommodation
Natural loss of accommodation with increasing age presbyopia
"lazy eye." Decreased vision in one or both eyes without detectable anatomic damage in the eye or visual pathways. Usually uncorrectable by eyeglasses or contact lenses. amblyopia
Clear, watery fluid that fills the space between the back surface of the cornea and the front surface of the vitreous, bathing the lens. Produced by the ciliary processes. Nourishes the cornea, iris, and lens and maintains intraocular pressure aqueous humor
Vague eye discomfort arising from use of the eyes; may consist of eyestrain, headache, and/or browache. May be related to uncorrected refractive error or poor fusional amplitudes. asthenopia
Optical defect in which refractive power is not uniform in all directions (meridians). Light rays entering the eye are bent unequally by different meridians, which prevents formation of a sharp image focus on the retina astigmatism
Blending of the separate images seen by each eye into one composite image binocular vision
Sightless area within the visual field of a normal eye. Caused by absence of light sensitive photoreceptors where the optic nerve enters the eye. blind spot
Created by: quixoptic
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