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What are the Most Common Types of Low Vision?
- Loss of Central Vision – the center of the person's view is blurred or
blocked, but side (peripheral) vision remains intact. This makes it difficult to
read or recognize faces and most details in the distance. Mobility, however, is
usually unaffected because side vision remains intact.
- Loss of Side Vision – typified by an inability to distinguish anything to
one side or both sides, or anything directly above and/or below eye level.
Central vision remains, however, making it possible to see what is directly
ahead. Typically, loss of side vision affects mobility and slows reading speed
because the person sees only a few words at a time. Sometimes referred to as
"tunnel vision."
- Blurred Vision – objects both near and far appear out of focus, even with
the best conventional spectacle correction possible and even when the target is
very large.
- Generalized Haze – the sensation of a film or glare that may extend over the
entire viewing field and may produce various patterns or areas of relatively
severe vision loss.
- Extreme Light Sensitivity – exists when standard levels of illumination
overwhelm the visual system, producing a washed out image and glare disability.
People with extreme light sensitivity may actually suffer pain or discomfort
from relatively normal levels of illumination.
- Night Blindness – inability to see outside at night under starlight or
moonlight, or in dimly lighted interior areas such as movie theaters or
restaurants.
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