Trends of Visual Impairment and Blindness in the Singapore Chinese Population over a Decade.

Journal Article (Journal Article)

We evaluated the prevalence of visual impairment (VI) and blindness among Chinese adults in the Singapore Chinese Eye Study (SCES, 2009-2011), and compared the trends with the Tanjong Pagar Survey, Singapore (TPS), conducted a decade earlier. The SCES comprised of 3,353 Chinese adults aged ≥40 years (response rate, 72.8%). Participants underwent standardized examinations, including measurements of presenting, and best-corrected visual acuity (VA). Bilateral VI (VA < 20/40 to ≥20/200) and blindness (VA < 20/200) were defined based on the United States definition (better-seeing eye). Age-standardized prevalence was calculated using the 2010 Singapore Chinese Population Census. Primary causes and factors associated with VI and blindness were evaluated. In SCES, the age-standardized prevalence of presenting bilateral VI and blindness were 17.7% and 0.6%, respectively; the age-standardised prevalence of best-corrected bilateral VI and blindness were 3.4% and 0.2%, respectively. The previous TPS reported similar rates of best-corrected bilateral VI (3.8%) and blindness (0.3%). In SCES, cataract remains the main cause for both best-corrected bilateral VI (76.0%) and blindness (50.0%). Older age, female, lower income, lower educational level, and smaller housing type were associated with presenting bilateral VI or blindness (all P ≤ 0.025). These findings will be useful for the planning of eye care services and resource allocation.

Full Text

Duke Authors

Cited Authors

  • Tham, Y-C; Lim, S-H; Shi, Y; Chee, M-L; Zheng, YF; Chua, J; Saw, S-M; Foster, P; Aung, T; Wong, TY; Cheng, C-Y

Published Date

  • August 15, 2018

Published In

Volume / Issue

  • 8 / 1

Start / End Page

  • 12224 -

PubMed ID

  • 30111785

Pubmed Central ID

  • PMC6093864

Electronic International Standard Serial Number (EISSN)

  • 2045-2322

Digital Object Identifier (DOI)

  • 10.1038/s41598-018-30004-9


  • eng

Conference Location

  • England