Prevalence and causes of vision loss in China from 1990 to 2019: findings from the Global Burden of Disease Study 2019

Xu, Tingling and Wang, Bingsong and Liu, Hua and Wang, Haidong and Yin, Peng and Dong, Wenlan and Li, Jianhong and Wang, Ya Xing and Yusufu, Mayinuer and Briant, Paul and Reinig, Nickolas and Ashbaugh, Charlie and Adelson, Jaimie and Vos, Theo and Bourne, Rupert R. A. and Wang, Ningli and Zhou, Maigeng (2020) Prevalence and causes of vision loss in China from 1990 to 2019: findings from the Global Burden of Disease Study 2019. The Lancet Public Health, 5 (12). e682-e691. ISSN 2468-2667

[img]
Preview
Text
Published Version
Available under the following license: Creative Commons Attribution Non-commercial No Derivatives.

Download (483kB) | Preview
Official URL: https://doi.org/10.1016/S2468-2667(20)30254-1

Abstract

Background: Vision loss is an important public health issue in China, but a detailed understanding of national and regional trends in its prevalence and causes, which could inform health policy, has not been available. This study aimed to assess the prevalence, causes, and regional distribution of vision impairment and blindness in China in 1990 and 2019. Methods: Data from the Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2019 were used to estimate the prevalence of moderate and severe vision impairment and blindness in China and compare with other Group of 20 (G20) countries. We used GBD methodology to systematically analyse all available demographic and epidemiological data at the provincial level in China. We compared the age-standardised prevalences across provinces, and the changes in proportion of vision loss attributable to various eye diseases in 1990 and 2019. We used two different counterfactual scenarios with respect to population structure and age-specific prevalence to assess the contribution of population growth and ageing to trends in vision loss. Findings: In 2019, the age-standardised prevalence was 2·57% (uncertainty interval [UI] 2·28–2·86) for moderate vision impairment, 0·25% (0·22–0·29) for severe vision impairment, and 0·48% (0·43–0·54) for blindness in China, which were all below the global average, but the prevalence of moderate and severe vision impairment had increased more rapidly than in other G20 countries from 1990 to 2019. The prevalence of vision loss increased with age, and the main causes of vision loss varied across age groups. The leading causes of vision impairment in China were uncorrected refractive error, cataract, and macular degeneration in both 1990 and 2019 in the overall population. From 1990 to 2019, the number of people with moderate vision impairment increased by 133·67% (from 19·65 to 45·92 million), those with severe vision impairment increased by 147·14% (from 1·89 to 4·67 million), and those with blindness increased by 64·35% (from 5·29 to 8·69 million); in each case, 20·16% of the increase could be explained by population growth. The contributions to these changes by population ageing were 87·22% for moderate vision impairment, 116·06% for severe vision impairment, and 99·22% for blindness, and the contributions by age-specific prevalence were 26·29% for moderate vision impairment, 10·91% for severe vision impairment, and −55·04% for blindness. The prevalence and specific causes of vision loss differed across provinces. Interpretation: Although a comprehensive national policy to prevent blindness is in place, public awareness of visual health needs improving, and reducing the prevalence of moderate and severe vision impairment should be prioritised in future work.

Item Type: Journal Article
Faculty: Faculty of Health, Education, Medicine & Social Care
Depositing User: Lisa Blanshard
Date Deposited: 20 Jan 2021 15:39
Last Modified: 09 Sep 2021 18:52
URI: https://arro.anglia.ac.uk/id/eprint/706208

Actions (login required)

Edit Item Edit Item