Around 648,000 Americans age 80 and older are blind-- 7% of the 80 and older population.
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Congdon, Nathan G., Benita J. O'Colmain, Caroline C.W. Klaver, Ronald Klein, Beatriz Munoz, David S. Friedman, John Kempen, Hugh R. Taylor, Paul Mitchell, and Leslie Hyman. "Causes and Prevalence of Visual Impairment Among Adults in the United States". Archives of Ophthalmology. Vol. 122, No. 4, pp. 477-85. [ Permalink ] |