TY - JOUR
T1 - Global estimates on the number of people blind or visually impaired by cataract
T2 - a meta-analysis from 2000 to 2020
AU - Vision Loss Expert Group of the Global Burden of Disease Study
AU - GBD 2019 Blindness and Vision Impairment Collaborators
AU - Pesudovs, Konrad
AU - Lansingh, Van Charles
AU - Kempen, John H.
AU - Tapply, Ian
AU - Fernandes, Arthur G.
AU - Cicinelli, Maria Vittoria
AU - Arrigo, Alessandro
AU - Leveziel, Nicolas
AU - Resnikoff, Serge
AU - Taylor, Hugh R.
AU - Sedighi, Tabassom
AU - Flaxman, Seth
AU - Bikbov, Mukkharram M.
AU - Braithwaite, Tasanee
AU - Bron, Alain
AU - Cheng, Ching Yu
AU - Del Monte, Monte A.
AU - Ehrlich, Joshua R.
AU - Ellwein, Leon B.
AU - Friedman, David
AU - Furtado, João M.
AU - Gazzard, Gus
AU - George, Ronnie
AU - Elizabeth Hartnett, M.
AU - Jonas, Jost B.
AU - Kahloun, Rim
AU - Khairallah, Moncef
AU - Khanna, Rohit C.
AU - Leasher, Janet
AU - Little, Julie Anne
AU - Nangia, Vinay
AU - Nowak, Michal
AU - Peto, Tunde
AU - Ramulu, Pradeep
AU - Topouzis, Fotis
AU - Tsilimbaris, Mitiadis
AU - Ya, Xing Wang
AU - Wang, Ningli
AU - Bourne, Rupert
AU - Briant, Paul Svitil
AU - Vos, Theo
AU - Abate, Yohannes Habtegiorgis
AU - Abdollahi, Mohammad
AU - Abdollahi, Mozhan
AU - Abebe, Ayele Mamo
AU - Abiodun, Olumide
AU - Aboagye, Richard Gyan
AU - Abrha, Woldu Aberhe
AU - Abualruz, Hasan
AU - Shahwan, Moyad Jamal
N1 - Publisher Copyright:
© The Author(s) 2024. corrected publication 2024.
PY - 2024/8
Y1 - 2024/8
N2 - Background: To estimate global and regional trends from 2000 to 2020 of the number of persons visually impaired by cataract and their proportion of the total number of vision-impaired individuals. Methods: A systematic review and meta-analysis of published population studies and gray literature from 2000 to 2020 was carried out to estimate global and regional trends. We developed prevalence estimates based on modeled distance visual impairment and blindness due to cataract, producing location-, year-, age-, and sex-specific estimates of moderate to severe vision impairment (MSVI presenting visual acuity <6/18, ≥3/60) and blindness (presenting visual acuity <3/60). Estimates are age-standardized using the GBD standard population. Results: In 2020, among overall (all ages) 43.3 million blind and 295 million with MSVI, 17.0 million (39.6%) people were blind and 83.5 million (28.3%) had MSVI due to cataract blind 60% female, MSVI 59% female. From 1990 to 2020, the count of persons blind (MSVI) due to cataract increased by 29.7%(93.1%) whereas the age-standardized global prevalence of cataract-related blindness improved by −27.5% and MSVI increased by 7.2%. The contribution of cataract to the age-standardized prevalence of blindness exceeded the global figure only in South Asia (62.9%) and Southeast Asia and Oceania (47.9%). Conclusions: The number of people blind and with MSVI due to cataract has risen over the past 30 years, despite a decrease in the age-standardized prevalence of cataract. This indicates that cataract treatment programs have been beneficial, but population growth and aging have outpaced their impact. Growing numbers of cataract blind indicate that more, better-directed, resources are needed to increase global capacity for cataract surgery.
AB - Background: To estimate global and regional trends from 2000 to 2020 of the number of persons visually impaired by cataract and their proportion of the total number of vision-impaired individuals. Methods: A systematic review and meta-analysis of published population studies and gray literature from 2000 to 2020 was carried out to estimate global and regional trends. We developed prevalence estimates based on modeled distance visual impairment and blindness due to cataract, producing location-, year-, age-, and sex-specific estimates of moderate to severe vision impairment (MSVI presenting visual acuity <6/18, ≥3/60) and blindness (presenting visual acuity <3/60). Estimates are age-standardized using the GBD standard population. Results: In 2020, among overall (all ages) 43.3 million blind and 295 million with MSVI, 17.0 million (39.6%) people were blind and 83.5 million (28.3%) had MSVI due to cataract blind 60% female, MSVI 59% female. From 1990 to 2020, the count of persons blind (MSVI) due to cataract increased by 29.7%(93.1%) whereas the age-standardized global prevalence of cataract-related blindness improved by −27.5% and MSVI increased by 7.2%. The contribution of cataract to the age-standardized prevalence of blindness exceeded the global figure only in South Asia (62.9%) and Southeast Asia and Oceania (47.9%). Conclusions: The number of people blind and with MSVI due to cataract has risen over the past 30 years, despite a decrease in the age-standardized prevalence of cataract. This indicates that cataract treatment programs have been beneficial, but population growth and aging have outpaced their impact. Growing numbers of cataract blind indicate that more, better-directed, resources are needed to increase global capacity for cataract surgery.
UR - https://www.scopus.com/pages/publications/85199813971
U2 - 10.1038/s41433-024-02961-1
DO - 10.1038/s41433-024-02961-1
M3 - Article
C2 - 38461217
AN - SCOPUS:85199813971
SN - 0950-222X
VL - 38
SP - 2156
EP - 2172
JO - Eye (Basingstoke)
JF - Eye (Basingstoke)
IS - 11
ER -