Prevalence and risk factors of uncorrected refractive error among an elderly Chinese population in urban China: a cross-sectional study

ABSTRACT:

Objectives

To investigate the prevalence and risk factors of uncorrected refractive error (URE) in an elderly urban Chinese population in China.

Design

A population-based cross-sectional study.

Methods

The study was conducted using a cluster random sample of residents aged 50 years or older living in the Jiangning Road subdistrict, Shanghai, China. All participants underwent a standardised interview and eye examinations, including presenting visual acuity (PVA) and best-corrected visual acuity (BCVA) between November 2012 and February 2013. URE was defined as an improvement of two lines or more in the BCVA compared with the PVA in the better eye of <20/40.

Results

A total of 1999 subjects (an 82.5% response rate) completed both the questionnaire and opht

SUBMITTER: Ye H 

PROVIDER: S-EPMC5875627 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature