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
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..View full abstract
Financial support for this research project: The Project Vision Charity Foundation, Hong Kong. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.