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Map of the Sultanate of Oman: prevalence of blindness by region (First Administration Unit) (OES 1997). Low prevalence of blindness (light grey area) regions: Muscat, North Sharqiya, Dhofar; causes: cataract 30%, glaucoma 25%, post segment 20%. High prevalence of blindness (dark grey area): regions: Dhahira and Musandam, N and S Batinah, Dhakhilya, S Sharqiya; causes: corneal opacities 36%, cataract:30% post segment 15%.
