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Abstract #27087 Published in IGR 12-4
Prevalence of glaucoma in North China: The Beijing eye study
Wang YX; Xu L; Yang H; Jonas JBAmerican Journal of Ophthalmology 2010; 150: 917-924
Purpose: To assess the prevalence of glaucoma in adult Chinese. Design: Population-based study. Methods: The Beijing Eye Study in 2001 included 4439 subjects with an age of 40+ years. Glaucoma was determined using the ISGEO (International Society of Geographical and Epidemiological Ophthalmology) classification scheme. Results: Glaucoma was detected in 158 subjects (3.7%, 95% confidence interval [CI] 3.1%4.2%), in which open-angle glaucoma (OAG), primary angle-closure glaucoma (PACG), and secondary glaucoma (SG) accounted for 2.6% (95% CI 2.1%3.0%), 1.0% (95% CI 0.7%1.3%), and 0.07% (95% CI 0%0.1%), respectively. The overall glaucoma prevalence for the age groups of 40 to 49 years, 50 to 59 years, 60 to 69 years, and 70+ years was 2.2%, 2.5%, 4.4%, and 9.5%, respectively. Glaucoma prevalence increased significantly with age (P = .001), myopic refractive error (P < .001), and intraocular pressure (P < .001). The age-standardized prevalence of OAG, PACG, and SG was 2.5%, 1.0%, and 0.1%, respectively. Prevalence of glaucoma-related bilateral blindness or unilateral blindness was significantly (P = .02 and P = .03) higher in PACG than in OAG. Frequency of glaucoma-associated blindness and low vision was significantly higher in the rural area than in the urban region (6/62 vs 2/96, P = .04). Conclusions: In the adult population of Greater Beijing, glaucoma prevalence was 3.6% and increased with age, myopic refractive error, and intraocular pressure. Glaucoma prevalence of 3.6% was comparable with figures from Caucasian populations. The ratio of OAG to PACG of 2.6:1 agrees with recent other studies from East Asia. Glaucoma-related blindness and low vision occurred significantly more often in PACG than in OAG.
L. Xu. Beijing Institute of Ophthalmology, 17 Hougou Lane, Chong Wen Men, 100005 Beijing, China. xlbio@yahoo.cn
Classification:
1.1 Epidemiology (Part of: 1 General aspects)
