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Low vision affects more than 2 million Americans and ranks behind only arthritis and heart disease as the reason for impaired daily functioning in Americans over the age of 70.1 Low vision is defined as a visual impairment that is not corrected by standard eyeglasses, contact lenses, medication, or surgery and that interferes with the ability to perform everyday activities. It is most commonly described in terms of remaining visual acuity (central vision) and visual field, peripheral, or side vision.2 Loss in central vision causes difficulty in detail discrimination (e.g., reading and discriminating fine detail and color). Peripheral vision loss causes orientation and mobility problems, such as having difficulty seeing curbs/steps or difficulty seeing in lowlight conditions.
Baseline data from the 2002 National Health Interview Survey (NHIS) indicate that approximately 14 per 1,000 Americans aged 18 and older with a visual impairment use vision rehabilitation services. According to the same study, 22 percent of people aged 18 and older with visual impairments use visual and adaptive devices.
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This page was last modified in July 2008