Prevalence and causes of blindness and vision impairment magnitude, Temporal Trends, and Projections in South and Central Asia

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Title: Prevalence and causes of blindness and vision impairment magnitude, Temporal Trends, and Projections in South and Central Asia
Authors: Nangia, V
Jonas, J
George, R
Lingam, V
Ellwein, L
Cicinelli, MV
Das, A
Flaxman, SR
Keeffe, J
Leasher, J
Naidoo, K
Pesudovs, K
Resnikoff, S
Silvester, A
Tahhan, N
Taylor, H
Wong, T
Bourne, R
Item Type: Journal Article
Abstract: Background: To assess prevalence and causes of vision loss in Central 68 and South Asia. Methods: A systematic review of medical literature assessed the prevalence of blindness (presenting visual acuity<3/60 in the better eye), moderate and severe vision impairment (MSVI; presenting visual acuity <6/18 but ≥3/60) and mild vision impairment (MVI; presenting visual acuity <6/12 and ≥6/18) in Central and South Asia for 1990, 2010, 2015, and 2020. Results: In Central and South Asia combined, age-standardized prevalences of blindness, MSVI and MVI in 2015 were for men and women 2.80% (80%uncertainty interval (UI):1.14-4.91) and 3.47% (80%UI:1.45-5.99),16.75% (80%UI:5.60-30.84) and 20.06% (80%UI:7.15-36.12), 11.49% (80%UI:3.43-21.44) and 12.77% (80%UI:4.04-23.48), respectively, with a significant decrease in the study period for both gender. In South Asia in 2015, 11.76 million individuals (32.65% of the global blindness figure) were blind and 61.19 million individuals (28.3% of the global total) had MSVI. From 1990 to 2015, cataract (accounting for 36.58% of all cases with blindness in 2015) was the most common cause of blindness, followed by undercorrected refractive error (36.43%), glaucoma (5.81%), age-related macular degeneration (2.44%), corneal diseases (2.43%), diabetic retinopathy (0.16%) and trachoma (0.04%). For MSVI in South Asia 2015, most common causes were under corrected refractive error (accounting for 66.39% of all cases with MSVI), followed by cataract (23.62%), age related macular degeneration (1.31%) and glaucoma (1.09%). Conclusions: One third of the global blind resided in South Asia in 2015, although the age-standardized prevalence of blindness and MSVI decreased significantly between 1990 and 2015.
Issue Date: 21-Jun-2019
Date of Acceptance: 23-Sep-2018
ISSN: 0007-1161
Publisher: BMJ Publishing Group
Start Page: 871
End Page: 877
Journal / Book Title: British Journal of Ophthalmology
Volume: 103
Issue: 7
Copyright Statement: © Author(s) (or their employer(s)) 2019. No commercial re-use. See rights and permissions. Published by BMJ.
Keywords: Science & Technology
Life Sciences & Biomedicine
global burden of disease study
vision loss expert group
vision loss
vision impairment
refractive error
macular degeneration
global burden of disease study
macular degeneration
refractive error
vision impairment
vision loss
vision loss expert group
Vision Loss Expert Group of the Global Burden of Disease Study
Ophthalmology & Optometry
1103 Clinical Sciences
1113 Opthalmology and Optometry
1117 Public Health and Health Services
Publication Status: Published
Online Publication Date: 2018-11-08
Appears in Collections:Mathematics
Faculty of Natural Sciences

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