查看文章

Purpose: To determine the prevalence rates of refractive errors in elderly people in Mashhad, Iran. Methods: In a cross-sectional study with a cluster sampling method, the sample population was selected proportionate to the total population of Mashhad. The selected citizens were then invited for eye examinations at the clinic. After an interview, refractive data were collected using objective and subjective refractions. Refractive error data were converted into spherical equivalent (SE), and myopia was defined as an SE worse than -0.50 diopters (D) and hyperopia worse than +0.50 D. Results: Of the 1540 selected samples, 93.5% participated in the study. Data were analyzed for 1367 adults without previous cataract surgery who had right eye refraction data; 35.4% were women, and 64.6% were men. The mean age was 63.7 ± 7.1 years. The prevalence of myopia was 27.2% (95% confidence interval (CI) 24.8–29.5 …