Trends in prevalence of blindness and distance and near vision impairment over 30 years: an analysis for the Global Burden of Disease Study

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11160%2F21%3A10442732" target="_blank" >RIV/00216208:11160/21:10442732 - isvavai.cz</a>

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=oX3hn6llCd" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=oX3hn6llCd</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/S2214-109X(20)30425-3" target="_blank" >10.1016/S2214-109X(20)30425-3</a>

Result language

angličtina

Original language name

Trends in prevalence of blindness and distance and near vision impairment over 30 years: an analysis for the Global Burden of Disease Study

Original language description

Background To contribute to the WHO initiative, VISION 2020: The Right to Sight, an assessment of global vision impairment in 2020 and temporal change is needed. We aimed to extensively update estimates of global vision loss burden, presenting estimates for 2020, temporal change over three decades between 1990-2020, and forecasts for 2050. Methods We did a systematic review and meta-analysis of population-based surveys of eye disease from January, 1980, to October, 2018. Only studies with samples representative of the population and with clearly defined visual acuity testing protocols were included. We fitted hierarchical models to estimate 2020 prevalence (with 95% uncertainty intervals [UIs]) of mild vision impairment (presenting visual acuity &gt;=6/18 and &lt;6/12), moderate and severe vision impairment (&lt;6/18 to 3/60), and blindness (&lt;3/60 or less than 10 degrees visual field around central fixation); and vision impairment from uncorrected presbyopia (presenting near vision &lt;N6 or &lt;N8 at 40 cm where best-corrected distance visual acuity is &gt;=6/12). We forecast estimates of vision loss up to 2050. Findings In 2020, an estimated 43.3 million (95% UI 37.6-48.4) people were blind, of whom 23.9 million (55%; 20.8-26.8) were estimated to be female. We estimated 295 million (267-325) people to have moderate and severe vision impairment, of whom 163 million (55%; 147-179) were female; 258 million (233-285) to have mild vision impairment, of whom 142 million (55%; 128-157) were female; and 510 million (371-667) to have visual impairment from uncorrected presbyopia, of whom 280 million (55%; 205-365) were female. Globally, between 1990 and 2020, among adults aged 50 years or older, age-standardised prevalence of blindness decreased by 28.5% (-29.4 to -27.7) and prevalence of mild vision impairment decreased slightly (-0.3%, -0.8 to -0.2), whereas prevalence of moderate and severe vision impainnent increased slightly (2.5%, 1.9 to 3.2; insufficient data were available to calculate this statistic for vision impairment from uncorrected presbyopia). In this period, the number of people who were blind increased by 50.6% (47.8 to 53.4) and the number with moderate and severe vision impairment increased by 91.7% (87.6 to 95.8). By 2050, we predict 61.0 million (52.9 to 69.3) people will be blind, 474 million (428 to 518) will have moderate and severe vision impairment, 360 million (322 to 400) will have mild vision impairment, and 866 million (629 to 1150) will have uncorrected presbyopia. Interpretation Age-adjusted prevalence of blindness has reduced over the past three decades, yet due to population growth, progress is not keeping pace with needs. We face enormous challenges in avoiding vision impairment as the global population grows and ages.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

30104 - Pharmacology and pharmacy

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Lancet Global Health

ISSN

2214-109X

e-ISSN

—

Volume of the periodical

9

Issue of the periodical within the volume

2

Country of publishing house

GB - UNITED KINGDOM

Number of pages

14

Pages from-to

"E130"-"E143"

UT code for WoS article

000632898500018

EID of the result in the Scopus database

2-s2.0-85098882179