4.2 million U.S. adults age 40 and older with diabetes, had diabetic retinopathy (from 2005 – 2008).
Centers for Disease Control and Prevention, National Center for Chronic Disease and Health Promotion. National Diabetes Statistics Report, 2014: Estimates of diabetes and its burden in the United States. Atlanta, GA: Centers for Disease Control & Prevention; 2014:6. https://www.cdc.gov/diabetes/pdfs/data/2014-report-estimates-of-diabetes-and-its-burden-in-the-united-states.pdf. Accessed November 2, 2015