Design Guidelines for the Visual Environment
Low vision is characterized by vision that is no longer correctable by glasses, contact lens, surgery, or medication. Low vision is severe enough to cause difficulty with the ability to complete daily living tasks. Vision impairment occurs from age; injury, such as traumatic brain injuries experienced by war veterans; or disease. Different diseases affect different parts of the visual system and cause different patterns of vision loss, which result in different functional deficits and accommodative needs.
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