Prevalence and causes of vision loss in North Africa and the Middle East: 1990-2010

Moncef Khairallah, Rim Kahloun, Seth Flaxman, Jost Jonas, Jill Keeffe, Janet Leasher, Kovin Naidoo, Konrad Pesudovs, Holly Price, Richard White, Tien Wong, Serge Resnikoff, Hugh Taylor, Rupert Bourne

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    Abstract

    Background: To describe the prevalence and causes of visual impairment and blindness in North Africa and the Middle East (NAME) in 1990 and 2010. Methods: Based on a systematic review of medical literature, we examined prevalence and causes of moderate and severe vision impairment (MSVI; presenting visual acuity <6/18, =3/60) and blindness ( presenting visual acuity <3/60). Results: In NAME, the age-standardised prevalence of blindness decreased from 2.1% to 1.1% and MSVI from 7.1% to 4.5%. In 2010, 3.119 million people were blind, and 13.700 million had MSVI. Women were generally more often affected than men. Main causes of blindness were cataract, uncorrected refractive error, macular degeneration and glaucoma. Main causes of MSVI were cataract and uncorrected refractive errors. Proportions of blindness and MSVI from trachoma significantly decreased. Conclusions Although the absolute numbers of people with blindness and MSVI increased from 1990 to 2010, the overall age-standardised prevalence of blindness and MSVI among all ages and among those aged 50 years and older decreased significantly ( p<0.05). Cataract and uncorrected refractive error were the major causes of blindness and MSVI.

    Original languageEnglish
    Pages (from-to)605-611
    Number of pages7
    JournalBritish Journal of Ophthalmology
    Volume98
    Issue number5
    DOIs
    Publication statusPublished - 2014

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    Khairallah, M., Kahloun, R., Flaxman, S., Jonas, J., Keeffe, J., Leasher, J., Naidoo, K., Pesudovs, K., Price, H., White, R., Wong, T., Resnikoff, S., Taylor, H., & Bourne, R. (2014). Prevalence and causes of vision loss in North Africa and the Middle East: 1990-2010. British Journal of Ophthalmology, 98(5), 605-611. https://doi.org/10.1136/bjophthalmol-2013-304068