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Purpose: To investigate the prevalence and risk factors for an epiretinal membrane (ERM) in Korean population. Methods: Using the database of the Korea National Health and Nutrition Examination Survey from 2008through 2012, 14,772 participants 40 years of age or older with gradable fundus photographs were included. The presence of ERM was determined by using fundus photographs. The prevalence of ERM was estimatedand possible risk factors including systemic factors, nutritional status, and blood tests were analyzed viamultiple logistic regression analyses. Results: The prevalence of ERM was 2.9% (95% confidence interval [CI], 2.6% to 3.3%). On multiple logisticregression analysis, the prevalence of ERM was affected by age. The odds ratios (ORs) against the fortieswere 2.70, 5.48, and 5.69 in the fifties, sixties, and seventies, respectively. ERM was also significantly affectedby cataract surgery (OR, 2.82; 95% CI, 2.08 to 3.81) and by the increase in intake of 100-mg calcium (OR,1.05; 95% CI, 1.00 to 1.11). ERM had negative associations with red blood cell count (OR, 0.66; 95% CI, 0.45to 0.95). Conclusions: The estimated nation-wide prevalence of ERM in Korea is 2.9%. The presence of ERM in thegeneral population is associated with age, cataract surgery, increased dietary calcium, and a low red bloodcell count.
