Kim, Eun Chul; Morgan, Ian G.; Kakizaki, Hirohiko; Kang, Seungbum; Jee, Donghyun
PURPOSE To examine the prevalence and risk factors of refractive errors in a representative Korean population aged 20 years old or older. METHODS A total of 23,392 people aged 20+ years were selected for the Korean National Health and Nutrition Survey 2008-2011, using stratified, multistage, clustered sampling. Refractive error was measured by autorefraction without cycloplegia, and interviews were performed regarding associated risk factors including gender, age, height, education level,...[Show more]
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