Incidence of Visual Impairment Over a 20-Year Period: The Beaver Dam Eye Study – Corrected Proof
Purpose:
To describe visual impairment (VI) over a 20-year period and its associations with age-related eye diseases and socioeconomic factors in the Beaver Dam Eye Study.
Design:
Population-based cohort study.
Participants:
Four thousand nine hundred twenty-six persons 43 to 86 years of age participated in the baseline examination phase from 1988 through 1990, and 3721, 2962, 2375, and 1913 persons participated in follow-up examinations each spaced 5 years apart from 1993 through 1995, 1998 through 2000, 2003 through 2005, and 2008 through 2010, respectively.
Methods:
Best-corrected visual acuity after refraction, assessed by the Early Treatment Diabetic Retinopathy Study protocol.
Main (Read more...)