Journal article

Prevalence of visual impairment and outcomes of cataract surgery in Chaonan, South China

Xiujuan Zhang, Emmy Y Li, Christopher Kai-Shun Leung, David C Musch, Xin Tang, Chongren Zheng, Mingguang He, David F Chang, Dennis Shun-Chiu Lam

PLOS ONE | PUBLIC LIBRARY SCIENCE | Published : 2017

Abstract

PURPOSE: To estimate the prevalence and causes of blindness and visual impairment (VI), and report the outcomes of cataract surgery in Chaonan Region, Guangdong Province, southern China. DESIGN: Cross-sectional population-based survey. PARTICIPANTS: A total of 3484 participants including 1397 men (40.1%) and 2087 women (59.9%) aged ≥50 years were examined (94.2% response rate). METHOD: A two-stage cluster sampling procedure was used to select 3700 participants aged ≥50 years from 74 clusters of Chaonan Region. Participants were examined according to the Rapid Assessment of Avoidable Blindness (RAAB) method. Blindness and visual impairment (VI) were defined by the World Health Organization cr..

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University of Melbourne Researchers