EPIDEMIOLOGY SECTION EDITOR: LESLIE HYMAN, PhD Increased Prevalence of Myopia in the United States Between 1971-1972 and 1999-2004 Susan Vitale, PhD, MHS; Robert D. Sperduto, MD; Frederick L. Ferris III, MD Objective: To compare US population prevalence es- significantly higher in 1999-2004 than in 1971-1972 timates for myopia in 1971-1972 and 1999-2004. (41.6% vs 25.0%, respectively; P .001). Prevalence es- timates were higher in 1999-2004 than in 1971-1972 for Methods: The 1971-1972 National Health and Nutri- black individuals (33.5% vs 13.0%, respectively; P .001) tion Examination Survey provided the earliest nation- and white individuals (43.0% vs 26.3%, respectively; ally representative estimates for US myopia prevalence; P .001) and for all levels of myopia severity (−2.0 di- myopia was diagnosed by an algorithm using either lens- opters [D]: 17.5% vs 13.4%, respectively [P .001];−2.0 ometry, pinhole visual acuity, and presenting visual acu- to −7.9 D: 22.4% vs 11.4%, respectively [P .001]; ity (for presenting visual acuity 20/40) or retinoscopy −7.9 D: 1.6% vs 0.2%, respectively [P .001]). (for presenting visual acuity 20/50). Using a similar method for diagnosing myopia, we examined data from Conclusions: When using similar methods for each period, the 1999-2004 National Health and Nutrition Examina- the prevalence
JAMA Ophthalmology – American Medical Association
Published: Dec 1, 2009
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