Evidence map›Paper›PMID 35959749›Full record

SynthesisOphthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists)2022

Regional variations and temporal trends of childhood myopia prevalence in Africa: A systematic review and meta-analysis.

Emmanuel Kobia-Acquah, Daniel Ian Flitcroft, Prince Kwaku Akowuah, Gareth Lingham, James Loughman

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

23 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Regional variations and temporal trends of childhood myopia prevalence in Africa: A systematic review and meta-analysis.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2022
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  20. Baseline metrics that may predict future myopia in young children.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2023
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Emmanuel Kobia-AcquahCentre for Eye Research Ireland, School of Physics, Clinical and Optometric Sciences, College of Sciences and Health, Technological University Dublin, Dublin, Ireland.ORCID 0000-0002-5955-7992
Daniel Ian FlitcroftCentre for Eye Research Ireland, School of Physics, Clinical and Optometric Sciences, College of Sciences and Health, Technological University Dublin, Dublin, Ireland.ORCID 0000-0002-7004-6026
Prince Kwaku AkowuahCollege of Optometry, University of Houston, Houston, Texas, USA.ORCID 0000-0003-3657-6768
Gareth LinghamCentre for Eye Research Ireland, School of Physics, Clinical and Optometric Sciences, College of Sciences and Health, Technological University Dublin, Dublin, Ireland.ORCID 0000-0002-8957-0733
James LoughmanCentre for Eye Research Ireland, School of Physics, Clinical and Optometric Sciences, College of Sciences and Health, Technological University Dublin, Dublin, Ireland.ORCID 0000-0003-3130-8991

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo provide contemporary and future estimates of childhood myopia prevalence in Africa.

methodsA systematic online literature search was conducted for articles on childhood (≤18 years) myopia (spherical equivalent [SE] ≤ -0.50D; high myopia: SE ≤ -6.00D) in Africa. Population- or school-based cross-sectional studies published from 1 Jan 2000 to 30 May 2021 were included. Meta-analysis using Freeman-Tukey double arcsine transformation was performed to estimate the prevalence of childhood myopia and high myopia. Myopia prevalence from subgroup analyses for age groups and settings were used as baseline for generating a prediction model using linear regression.

resultsForty-two studies from 19 (of 54) African countries were included in the meta-analysis (N = 737,859). Overall prevalence of childhood myopia and high myopia were 4.7% (95% CI: 3.3%-6.5%) and 0.6% (95% CI: 0.2%-1.1%), respectively. Estimated prevalence across the African regions was highest in the North (6.8% [95% CI: 4.0%-10.2%]), followed by Southern (6.3% [95% CI: 3.9%-9.1%]), East (4.7% [95% CI: 3.1%-6.7%]) and West (3.5% [95% CI: 1.9%-6.3%]) Africa. Prevalence from 2011 to 2021 was approximately double that from 2000 to 2010 for all studies combined, and between 1.5 and 2.5 times higher for ages 5-11 and 12-18 years, for boys and girls and for urban and rural settings, separately. Childhood myopia prevalence is projected to increase in urban settings and older children to 11.1% and 10.8% by 2030, 14.4% and 14.1% by 2040 and 17.7% and 17.4% by 2050, respectively; marginally higher than projected in the overall population (16.4% by 2050).

conclusionsChildhood myopia prevalence has approximately doubled since 2010, with a further threefold increase predicted by 2050. Given this trajectory and the specific public health challenges in Africa, it is imperative to implement basic myopia prevention programmes, enhance spectacle coverage and ophthalmic services and generate more data to understand the changing myopia epidemiology to mitigate the expanding risk of the African population.

Indexed as

MyopiaAdolescentAfricaChildCross-Sectional StudiesFemaleHumansMalePrevalenceRural PopulationAfricachildhoodmyopiaprevalencesystematic review and meta-analysistime trends

Identifiers

PMID35959749
PMCPMC9804554

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.