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Alaska Blind Child Discovery

A cooperative, charitable research project to vision screen every preschool Alaskan

Low Vision

    When optical devices such as glasses or contacts are not able to improve visual acuity, patients are classified as "low Vision." Low vision may be due to obstructions to clear light such as cataract or corneal opacity. Low vision may be due to retinal disease such as retinopathy of prematurity (ROP), retinal detachment, macular dystrophy or macular degeneration or progressive retinitis pigmentosa. Low vision can be due to disease of the nerves such as optic nerve hypoplasia or atrophy, or compression of the optic nerve by bone or tumor. Low vision can also be due to poor brain processing of vision from Amblyopia or a condition called "cerebral vision impairment." If the eyes can't stop wiggling ("Nystagmus"), the patient may also have low vision.    
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