Prevalence of Nonrefractive Visual Impairment in US Adults and Associated Risk Factors, 1999-2002 and 2005-2008
Fang Ko, MD, Susan Vitale, PhD, MHS, Chiu-Fang Chou, DrPH, Mary Frances Cotch, PhD, Jinan Saaddine, MD, David S. Friedman, MD, MPH, PhD
JAMA. 2012;308(22):2361-2368.
Published online December 12, 2012
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