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Purpose: To report the prevalence and risk factors associated with primary open-angle glaucoma (POAG) in the Kandy district of central Sri Lanka. Methods: A cross-sectional, population-based ophthalmic survey of the inhabitants (greater-than or equal to) 40 years of age from villages in the Kandy District, Sri Lanka was conducted. Selection was randomized using a cluster sampling process; 1721 eligible participants were identified, 1375 participated in the study and sufficient examination data to diagnose glaucoma in at least one eye was obtained in 1244 participants. A detailed ophthalmic history and examination including ocular biometry was made of each participant. Primary open-angle glaucoma was classified into three levels according to diagnostic evidence. Results: The overall prevalence of POAG was 2.3% (95% CI 1.53.2). In the univariate analyses, increasing age (P=0.001), intraocular pressure (IOP) (P<0.001), myopia (P<0.001) and axial length (P=0.003) were significantly associated with POAG. In the multivariate analysis, age (P=0.001), mean IOP (P<0.001) and mean axial length (P=0.008) were significant risk factors of POAG. Conclusions: The prevalence of POAG in the population aged (greater-than or equal to)40 years in central Sri Lanka was 2.3%. POAG in this population was independently associated with increasing age, IOP and axial length.
D. I. T. Sia. South Australian Institute of Ophthalmology, Royal Adelaide Hospital, North Terrace, Adelaide, SA 5000, Australia. daviditsia@gmail.com
1.1 Epidemiology (Part of: 1 General aspects)
9.2.2 Other risk factors for glaucoma (Part of: 9 Clinical forms of glaucomas > 9.2 Primary open angle glaucomas)