Progression of Near Vision Loss and Incidence of Near Vision Impairment in an Adult Chinese Population.

ABSTRACT:

Purpose

To investigate the progression of near vision loss and the cumulative incidence of near vision impairment (NVI) 6 years after initial examination of an urban Chinese cohort.

Design

Population-based, prospective cohort study.

Participants

People aged ≥35 years examined at baseline in the Yuexiu District of Guangzhou, China.

Methods

Participants examined at baseline were invited for 2-year and 6-year follow-up examinations in 2010 and 2014, respectively. Examinations included noncycloplegic autorefraction and binocular near visual acuity (NVA) with and without current near correction measured at 40 cm using a LogMAR ETDRS near vision tumbling E chart. Those with uncorrected binocular NVA (UCNVA) ≤20/40 underwent subjective refraction to obtain best-correc

SUBMITTER: Han X 

PROVIDER: S-EPMC6053595 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature