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

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 criteria. Participants with visual acuity (VA) < 6/18 in either eye were exam

SUBMITTER: Zhang X 

PROVIDER: S-EPMC5552304 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature