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  • Title: Prevalence of blindness and its causes among those aged 50 years and above in rural Karnataka, South India.
    Author: Chandrashekhar TS, Bhat HV, Pai RP, Nair SK.
    Journal: Trop Doct; 2007 Jan; 37(1):18-21. PubMed ID: 17326880.
    Abstract:
    To estimate the prevalence of blindness and its causes among those aged 50 years and above in rural Karnataka. A total of 1505 people aged 50 years and above from 15 villages were examined. The participants were selected through a house-to-house survey by the cluster sampling method. Visual acuity was tested using a modified Snellen's chart, and eyes were examined to ascertain the cause of blindness. The prevalence of blindness was 6.6% (95% confidence interval: 5.3-7.8%). Bilateral cataract was the principal cause of blindness among 78.7% of the blind and 12.1% were operated for cataract. In conclusion, the study area has a high burden of cataract blindness. Cataract surgical services should be made readily accessible and available to this rural population.
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