APA Dictionary of Psychology

reduction of visual capacity (especially visual acuity and visual field), regardless of the underlying cause, that cannot be corrected to the normal range with glasses, contact lenses, or medical or surgical treatment. Low vision causes problems with various aspects of visual performance (e.g., mobility, reading) and is often associated with a decline in quality of life, an increased risk of depression, and decreased functional status. Low vision services provided to those with this condition include assessment of an individual’s residual vision and instruction in the use of high-powered optical devices (see vision rehabilitation). Also called partial sight. See also blindness; visual impairment.