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The CDC and the World Health Organization define low vision as a visual acuity between 20/70 and 20/400 with the best possible correction, or a visual field of 20 degrees or less.(7) Blindness is described as a visual acuity worse than 20/400 with the best possible correction, or a visual field of 10 degrees or less.
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www.eeoc.gov/facts/blindness.html
www.eeoc.gov/facts/blindness.html
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Blindness - Wikipedia, the free encyclopedia
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Blindness is the condition of lacking visual perception due to physiological or neurological factors. Various scales have been developed to describe the extent of vision loss and define blindness. T...
en.wikipedia.org/wiki/Blindness
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• Glaucoma is one of the leading causes of blindness in the United States, and the most common cause of blindness among African Americans. • Nearly three million people have glaucoma, but half do not realize it because there are often no warning symptoms.
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www.aao.org/eyecare/news/upload/Eye-Health-Fact-Sheet.p...
www.aao.org/eyecare/news/upload/Eye-Health-Fact-Sheet.pdf
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Causes of Blindness and Low Vision: learn more about sight loss, Facts, Statistics, Signs, Symptoms, causes, Resources, helping, definitions, terms, coping, overcoming obstacles, latest news & information. ... Facts About Blindness. 40 kilobytes PDF download. (40 Kb Download PDF viewer, Acrobat Reader, from adobe.com...
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brailleinstitute.org/facts_about_sight_loss
brailleinstitute.org/facts_about_sight_loss
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To understand what causes color blindness, you need to know about the cones in your eyes. Cones in your eyes? Yes, but they're very small. These cones are cells on your retina, an area the size of a postage stamp that's at the back of your eye.
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kidshealth.org/kid/talk/qa/color_blind.html
kidshealth.org/kid/talk/qa/color_blind.html
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1) More Americans than ever face the threat of Blindness from Age related Eye Diseases. (The Eye Digest); 2) The New York State Commission for the Blind and Visually Handicapped estimates that there are 120,000 blind New ... (American Foundation for the Blind. Quick Facts and Figures on Blindness and Low Vision. 2003)
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www.visionsvcb.org/statistics.html
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Color blindness occurs when there is a problem with the color-sensing materials (pigments) in certain nerve cells of the eye. These cells are called cones. They are found in the retina, the light-sensitive layer of tissue at the back of the inner eye.
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www.nlm.nih.gov/medlineplus/ency/article/001002.htm
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Color Blindness views through Colorblind Eyes ... #03 Color blindness is more prevalent among males than females, because the most common form of color vision deficiency is encoded on the X sex chromosome. ... 5 Facts about Color Blindness - Chris Pultz Says: January 7th, 2009 at 17:47...
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www.colblindor.com/2009/01/06/50-facts-about-color-blin...
www.colblindor.com/2009/01/06/50-facts-about-color-blindness/
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