Gender difference in prevalence of vision impairment among those aged ≥65 years reporting chronic conditions: Findings from the 2007-2011 national health interview survey

John E. Crews, DPA1, Chiu-Fang Chou, Dr PH2, Xinzhi Zhang, MD, PhD3 and Jinan B. Saaddine, MD, MPH1
(1)Centers for Disease Control and Prevention, Atlanta, GA, (2)Centers for Disease Control and Prevention/The DB Consulting, Atlanta, GA, (3)National Institutes of Health, Bethesda,, MD