Blindness!. I think I once talked about it here?. Yes, I remember, that I talked about someone wanting to poison you and still laughing with you. Its a bad stuff. That's why I pity kids/people who are blind, They are helpless.
In spite of the progress made in surgical techniques in many countries during the last ten years, cataract (47.9%) remains the leading cause of visual impairment in all areas of the world, except for developed countries.
Other main causes of visual impairment in 2002 are glaucoma (12.3%), age-related macular degeneration (AMD) (8.7%), corneal opacities (5.1%), diabetic retinopathy (4.8%), childhood blindness (3.9%), trachoma (3.6%), and onchocerciasis (0.8%). The causes of avoidable visual impairment world wide are all the above except for AMD. In the least-developed countries, and in particular Sub- Saharan Africa, the causes of avoidable blindness are primarily, cataract (50%), glaucoma (15%), corneal opacities (10%), trachoma (6.8%), childhood blindness (5.3%) and onchocerciasis (4%).
Looking at the global distribution of avoidable blindness based on the population in each of the WHO regions, we see the following: South
East Asian 28%, Western Pacific 26%, African 16.6%, Eastern Mediterranean 10%, the American 9.6%, and European 9.6%.
Africa has rare cases of blindness.
Source: World Health Organization
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