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Over three
million people in the United States do not have normal vision
even with corrective lenses. If ordinary eyeglasses do not
provide clear vision, one is said to have low vision. This
should not be confused with blindness. People with low vision
still have useful vision that can often be improved with
low-vision devices. |
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Low vision
can result from birth defects, inherited diseases, injuries,
diabetes, glaucoma or macular degeneration. Although reduced
central or reading vision is most common, a person can have
low vision in their side (peripheral) vision, or a loss of
color vision or contrast sensitivity. |
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Low vision
devices or aides are available in optical and non-optical
types. Optical devices use lenses or combinations of lenses to
provide magnification. They should not be confused with
standard eyeglasses. There are five main kinds of optical
devices: magnifying spectacles, hand magnifiers, stand
magnifiers, telescopes and closed-circuit television.
Different devices may be needed for different purposes. If
possible, try the optical device before purchasing it and be
sure you understand how to use it. |
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The
simplest non-optical technique is to bring the object of
interest closer. Non-optical low vision devices include large
print books, check writing guides, enlarged phone dials,
talking appliances (timers, clocks, computers), and machines
that scan print and read out loud. |
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Government
and private agencies have social services available for people
with low vision. For more information, contact the following
resources:
| American
Academy of Ophthalmology Web Site |
www.eyenet.org |
| American
Foundation for the Blind |
(800)
232-5463 |
| National
Association for Visually Handicapped |
(212)
889-3141 |
| National
Library Service for the Blind and Physically
Handicapped |
(800)
424-8567 |
| Lighthouse International |
(800)
334-5497 |
| National
Eye Institute |
(301)
496-5248 |
| Prevent
Blindness America |
(800)
334-5497 |
| Resources
for Rehabilitation |
(617)
862-6455 |
| VISION
Foundation, Inc. |
(800)
852-3029 |
| Visions/Services for the Blind and
Visually Impaired |
(212)
425-2255 | |
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Veterans
may contact the Visual Impairment Services coordinator at
their local VA facility.
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