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Abstract #50236 Published in IGR 14-2
The prevalence of glaucoma in adult rural Chinese populations of the Bai nationality in Dali: the Yunnan Minority Eye Study
Zhong H; Li J; Li C; Wei T; Cha X; Cai N; Luo T; Yu M; Yuan YInvestigative Ophthalmology and Visual Science 2012; 53: 3221-3225
PURPOSE: We evaluated the prevalence of glaucoma in adults of the Bai Nationality populations in rural China. METHODS: A population-based survey of Chinese Bai Nationality aged ≥50 years from randomly selected block groups in southwestern China was conducted. Eligible persons were invited to local examination sites for a complete ophthalmic examination. Glaucoma was diagnosed using the International Society of Geographical and Epidemiological Ophthalmology Classification scheme. RESULTS: In the study, 2133 subjects (77.8% participation rate) were examined, with a crude prevalence of all glaucoma of 2.2% (95% confidence interval [CI] 1.6%-2.9%). Primary open angle glaucoma (POAG) was found in 1.0% of cases (95% CI 0.6%-1.6%) and primary angle-closure glaucoma (PACG) in 0.9% (95% CI 0.6%-1.4%). The prevalence of all glaucoma was significantly higher in older people and women. Mean intraocular pressure (IOP) was 16.17 ± 3.74 mm Hg (97.5th and 99.5th percentiles, 24 mm Hg and 30 mm Hg, respectively). The mean vertical cup-to-disc ratio (VCDR) was 0.43 ± 0.17 (97.5th and 99.5th percentiles 0.7 and 0.8, respectively). Unilateral blindness was found in 80% of PACG, compared to only 36.3% of POAG cases. CONCLUSIONS: Prevalence of POAG is similar to PACG in the ethnic Bai population living in rural southwestern China. PACG has a worse visual impairment and prognosis compared to POAG.
First Affiliated Hospital of Kunming Medical University, Kunming, China.
Full articleClassification:
1.1 Epidemiology (Part of: 1 General aspects)
