Prevalence and risk factors for adult cataract in the Jingan district of Shanghai
Abstract BackgroundTo report the prevalence of age-related cataract (ARC) in the Jingan district of Shanghai and analyze the risk factors for ARC.MethodsDuring March to June in 2010, a cross sectional study was conducted in a community selected by stratified cluster sampling in the Jingan district of Shanghai. Residents aged 40 and older were recruited and investigated by questionnaire and ophthalmic examination.ResultsA total of 2894 subjects aged 40 years and above were included in our study. 948 people (32.8%) were diagnosed with cataract including 845 with bilateral cataract and 292 with moderate and severe visual impairment (low vision). There were significant differences in the risk of cataract among different age groups and genders. The multivariable Logistic analysis suggested that the prevalence of cataract increased with age. Persons at lower risk for ARC were those with higher education status (OR=0.722), with refractive error (OR=1.352), and those who used computers for 3-8 hours every day (OR=0.592).ConclusionAge, refractive error, education level and daily time of using computers have a certain correlation with ARC.