Abstract: Objective To understand the prevalence of cataract in the elderly in Tunchang County, and to analyze its influencing factors. Methods A multi-stage cluster random sampling method was adopted from January to December 2020. One subdistrict office （township） was selected from each of the eight towns in Tunchang County, and two communities （villages） were selected from each subdistrict office （township） as survey sites. People aged ≥60 were selected from the survey sites to conduct eye examination and questionnaire survey. Descriptive epidemiological analysis method was used to analyze the prevalence of cataract in the elderly in Tunchang County, and univariate and multivariate analysis methods were used to analyze the influencing factors of cataract in the elderly. Results A total of 1 517 elderly permanent residents in Tunchang County were investigated. Male accounted for 49.51% and female accounted for 50.49%; The age was mainly 60-80 years old, accounting for 97.50%; The education level was mainly below senior high school, accounting for 70.53%. A total of 423 cases of cataract were detected, the prevalence rate was 27.88%. Multivariate Logistic regression analysis showed that the history of high myopia （OR=1.597）, diabetes （OR=2.720）, smoking （OR=1.443）, outdoor occupation （OR=28.042）, moderate intensity of eye use （OR=1.643）, and high intensity of eye use （OR=2.602） were the risk factors for cataract in the elderly in Tunchang County.Conclusion The prevalence of cataract in the elderly in Tunchang County is high, and high myopia, diabetes, smoking, high intensity of eye use, and outdoor occupation are the risk factors for the disease.

Key words: Cataract, Elderly, High myopia, Diabetes, Smoking, Nutritional status