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M. He, P.J. Foster, W. Huang, P.T. Khaw; Prevalence of Glaucoma in Urban Adult Chinese: A Population Based Survey in Liwan District, Guangzhou . Invest. Ophthalmol. Vis. Sci. 2005;46(13):3517.
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Purpose: To assess the prevalence and clinical characteristics of glaucoma in adult Chinese Methods: A total of 2313 subjects aged 50 years and over were identified from Household Residence Registry and door–to–door enumeration using clustered random sampling procedure. Glaucoma was diagnosed in people with 97.5th percentile of vertical cup disc ratio (VCDR) or asymmetry with a reproducible visual field defect, or on the basis of 99.5th percentile VCDR or asymmetry alone if field defect was not available. If both optic disc and visual field assessment were not possible, the diagnosis was based on blind vision with 99.5th percentile intraocular pressure or previous glaucoma filtering surgery and reliable medical records. The classification of the angle was based on gonioscopy. Results: In a total of 1504 subjects (75.3%) examined, crude prevalence of all glaucoma was 3.8% (95% confidence interval [CI]=2.8%, 4.8%). Primary open–angle glaucoma (POAG) was found in 2.1% (95%CI: 1.4%, 2.8%), primary angle–closure glaucoma (PACG) in 1.5% (95%CI: 0.8%, 2.1%). The prevalence of all glaucoma was significantly higher in older and male cohort. Conclusions: Prevalence of POAG was found to be much higher than the previous data in mainland China but was similar to that of Chinese Singaporean.
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