April 2014
Volume 55, Issue 13
Free
ARVO Annual Meeting Abstract  |   April 2014
Five-Year Incidence of Clinically Significant Cataract in Urban Southern China: The Liwan Eye Study
Author Affiliations & Notes
  • Lanhua Wang
    Zhongshan Ophthalmic Center, Guangzhou, China
  • Qiuxia Yin
    Zhongshan Ophthalmic Center, Guangzhou, China
  • Wenyong Huang
    Zhongshan Ophthalmic Center, Guangzhou, China
  • Shengsong Huang
    Zhongshan Ophthalmic Center, Guangzhou, China
  • Decai Wang
    Zhongshan Ophthalmic Center, Guangzhou, China
  • Mingguang He
    Zhongshan Ophthalmic Center, Guangzhou, China
  • Footnotes
    Commercial Relationships Lanhua Wang, None; Qiuxia Yin, None; Wenyong Huang, None; Shengsong Huang, None; Decai Wang, None; Mingguang He, None
  • Footnotes
    Support None
Investigative Ophthalmology & Visual Science April 2014, Vol.55, 1562. doi:
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      Lanhua Wang, Qiuxia Yin, Wenyong Huang, Shengsong Huang, Decai Wang, Mingguang He; Five-Year Incidence of Clinically Significant Cataract in Urban Southern China: The Liwan Eye Study. Invest. Ophthalmol. Vis. Sci. 2014;55(13):1562.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose: To determine five-year incidence of clinically significant cataract and its risk factors in an elderly urban Chinese population

Methods: Participants underwent a comprehensive eye examination at baseline in 2003 and then five years later. Clinically significant cataract was defined as people with lens opacity and best-corrected visual acuity (BCVA) > 20/63 in both eyes at baseline in 2003 but decreased to <20/63caused by cataract in either eyes at follow-up in 2009, or those with cataract surgery performed between baseline and 5-year follow up visits.

Results: Among 1405 baseline participants, 924 (75.0%) of 1232 survivors participated in the 5-year follow-up. The incidence of clinically significant cataract was 3.45% (17 cases) among the persons aged less than 65 years whereas this incidence increased to 23.9% (72 cases) among the participants > 65 years (p < 0.001), with an overall incidence of 11.2% (95% confidence interval [CI] 9.20% ~ 13.6%). In univariable analysis, incidence of cataract increased significantly with older age (P < 0.001),less BMI( p=0.036)and less education (P < 0.001), but not associated with gender, income status, hypertension and diabetes. In multivariate logistic regression models, incidence of cataract was significantly associated with age (p<0.001)and BMI(p=0.038).

Conclusions: The incidence of clinically significant cataract is high in urban Chinese. These data may help the public health planner to estimate the demand of cataract surgery service in the community.

Keywords: 413 aging • 445 cataract • 463 clinical (human) or epidemiologic studies: prevalence/incidence  
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