Silver Book Fact
An estimated 4.1 million Americans age 40 and older have diabetic retinopathy.
Kempen J, O'Colmain B, Leske M, et al. The Prevalence of Diabetic Retinopathy Among Adults in the United States. Archives of Ophthalmology. 2004; 122(4): 552-63. http://archopht.jamanetwork.com/article.aspx?articleid=416212