Frequency of under-corrected refractive errors in elderly Chinese in Beijing
- 62 Downloads
The aim of the study was to evaluate the prevalence of under-corrected refractive error among elderly Chinese in the Beijing area.
The population-based, cross-sectional, cohort study comprised 4,439 subjects out of 5,324 subjects asked to participate (response rate 83.4%) with an age of 40+ years. It was divided into a rural part [1,973 (44.4%) subjects] and an urban part [2,466 (55.6%) subjects]. Habitual and best-corrected visual acuity was measured. Under-corrected refractive error was defined as an improvement in visual acuity of the better eye of at least two lines with best possible refractive correction.
The rate of under-corrected refractive error was 19.4% (95% confidence interval, 18.2, 20.6). In a multiple regression analysis, prevalence and size of under-corrected refractive error in the better eye was significantly associated with lower level of education (P<0.001), female gender (P<0.001), and age (P=0.001).
Under-correction of refractive error is relatively common among elderly Chinese in the Beijing area when compared with data from other populations.
KeywordsRefractive error Visual impairment Poor vision Blindness Myopia Education Gender
- 7.Xu L, Li J, Zheng Y, Cui T, Zhu J, Ma K, Yang H, Ma B, Jonas JB (2005) Intraocular pressure in Northern China in an urban and rural population. The Beijing Eye Study. Am J Ophthalmol (in press)Google Scholar