BMC Ophthalmology (Oct 2017)

Prevalence and risk factors for myopia in older adult east Chinese population

  • Cailian Xu,
  • Chenwei Pan,
  • Chunhua Zhao,
  • Mingchao Bi,
  • Qinghua Ma,
  • Jianhui Cheng,
  • E. Song

DOI
https://doi.org/10.1186/s12886-017-0574-4
Journal volume & issue
Vol. 17, no. 1
pp. 1 – 11

Abstract

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Abstract Background To determine the prevalence and associated factors for myopia and high myopia among older population in a rural community in Eastern China. Methods A community-based, cross-sectional survey was conducted in the Weitang town located in Suzhou, an urban metropolis in East China. A total of 5613 Chinese residents aged 60 years and older were invited to complete a questionnaire and participated in a detailed eye examination,including measurements of visual acuity and refractive error using autorefraction and subjective refraction. Myopia and high myopia was defined as SE < −0.5 diopters (D) and < −5.0 D, respectively. Results Among the 5613 participating individuals, 4795 (85.4%) complete refraction data of phakic right eye was included for analysis. The age-adjusted prevalence was 21.1% (95% confidence interval [CI], 19.9-22.2) for myopia and 2.5% (95% CI, 2.1-2.9) for high myopia. The prevalence of myopia tended to increase significantly with age(p < 0.001),and women had a higher rate of myopia than men (p < 0.001). According to multivariate logistic regression analysis, adults who were older (odds ration[OR]:1.05; 95% CI:1.04-1.07), spent more time for sleeping at night (OR:1.12;95% CI: 1.06-1.18),or had cataract (OR:1.60;95% CI:1.36-1.88) and family history of myopia (OR:1.47;95% CI:1.23-1.77), are more susceptible to myopia (p < 0.001). People who had older age, family history, cataract and specially longer night-time sleep duration, would have a higher risk of myopia. Conclusion Myopia and high myopia among rural old adult population in Eastern China presents common. The current literature unanticipated suggests that there was a positive significant association between prevalence of myopia and night-time sleep duration among adult. Our data provide some evidence of this relationship and highlight the need for larger studies to further investigate this relationship longitudinally and explore mechanism therein.

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