Silver Book Fact
In 2001, approximately 420,000 diabetic retinopathy patients visited physicians or hospitals for treatment of their disease.
Rein D, Zhang P, Wirth K, Lee P, et al. The Economic Burden of Major Adult Visual Disorders in the United States. Arch Opthalmol. 2006; 124(12): 1754-60. http://archopht.ama-assn.org/cgi/content/abstract/124/12/1754