Journal article

Refractive Error and Biometry in Older Chinese Adults: The Liwan Eye Study

Mingguang He, Wenyong Huang, Yuetao Li, Yingfeng Zheng, Qiuxia Yin, Paul J Foster

INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE | ASSOC RESEARCH VISION OPHTHALMOLOGY INC | Published : 2009

Abstract

PURPOSE: To assess the prevalence of refractive error and describe the distribution of ocular biometry and its association with refraction in adult Chinese. METHODS: Random clustering sampling was used to identify adults aged > or = 50 years in Liwan District, Guangzhou. Refraction was determined by subjective refraction that achieved the best corrected vision based on monocular measurement. Ocular biometry was measured by A-mode ultrasound using a handheld applanation probe. RESULTS: Among 1405 participants in the study, data from 1269 phakic right eyes were available for analysis. The prevalence of myopia (SE +0.5 D), and astigmatism (cylinder > 0.75 D) was 32.3% (95% confidence interval ..

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University of Melbourne Researchers

Grants

Awarded by UCL


Awarded by Scientific and Technology Foundation of Guangdong Province


Awarded by Ministry of Education


Awarded by Medical Research Council


Awarded by Wellcome Trust


Funding Acknowledgements

Supported by a UCL Graduate School Research Scholarship and UCL Overseas Research Scholarship 2001061054, Grant 2005B30901008 from the Scientific and Technology Foundation of Guangdong Province, and Grant NCET-06-0720 from the Program for New Century Excellent Talents in University, Ministry of Education (all to MH), Grant G0401527 from the Medical Research Council, Grant 075110 from the Wellcome Trust, and the Richard Desmond Charitable Foundation (via Fight for Sight) (all PJF).