Prevalence of Vision Impairment in Older Adults in Rural China in 2014 and Comparisons With the 2006 China Nine-Province Survey.

ABSTRACT: PURPOSE:To estimate the prevalence of vision impairment and blindness in 2014 among older adults in rural China with comparisons with the 2006 Nine-Province Survey. DESIGN:Population-based, cross-sectional study. METHODS:Geographical cluster sampling was used in randomly selecting residents from a rural county or semi-rural district within 9 provinces: Beijing, Jiangsu, Guangdong, Heilongjiang, Jiangxi, Hebei, Ningxia, Chongqing, and Yunnan. Persons 50 years of age or older were enumerated through household visits and invited to examination sites for visual acuity testing and examination. Vision impairment and blindness in 2014 was compared with data from the 2006 survey. RESULTS:Among 51 310 examined persons, the prevalence of presenting vision impairment (<20/63 to ≥20/400) in the better

SUBMITTER: Zhao J 

PROVIDER: S-EPMC6029940 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature