Prevent Blindness America. Vision Problems in the U.S.: Prevalence of adult vision impairment and age-related eye disease in the U.S.. Chicago: IL: Prevent Blindness America; 2012. http://www.visionproblemsus.org/
From 2005 – 2008, around 4.2 million diabetics age 40 and older had diabetic retinopathy. Of these, 655,000 had advanced diabetic retinopathy that could lead to severe vision loss.
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