ArticleAfrican health sciences2019
Colour vision deficiency among students in Lagos State, Nigeria.
Article in African health sciences, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.
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4 citing papers in PubMed, 1 synthesis or guideline pooled it, 8 citations in OpenAlex.
- Prevalence of color vision deficiency in Africa: Systematic review and meta-analysis.PloS one · 2024Pooled it
- Prevalence of color vision deficiency among first-year health science students at a medical university in Vietnam.Scientific reports · 2026Article
- Article
- Resurgence of non-communicable diseases in LMICs: a cause for concern?African health sciences · 2019Article
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundCongenital colour vision defects are x-linked inherited, non-progressive and untreatable disorders that describe poor colour discrimination.
objectiveTo determine the prevalence of congenital colour vision deficiency among students in Lagos, Nigeria.
methodsA school-based cross-sectional, cluster sample study was conducted to test the colour vision of 2326 primary and high school students. Inclusion criteria were Snellen VA 20/20 or better and absence of known ocular pathologies. Colour vision deficiency (CVD) was evaluated with the Richmond-HRR colour vision test plates.
resultsThere were 1014 (43.6%) males and 1312 (56.4%) females with a mean age of 13.40 ± 2.40 years (range = 7-22 years). The prevalence of CVD was 58 (2.5%), which was higher in males 49 (4.8%) than females 9 (0.7%). The prevalence of congenital CVD was significantly associated with males (p = 0.00), but not with females (p = 0.22). Of the 58 cases of CVD, 17 (0.7%) had protan deficiency, 38 (1.6%) had deutan deficiency and three (0.1%) were unclassified.
conclusionThe prevalence of congenital CVD among students in Lagos is comparable to findings in other parts of Nigeria but differs from other parts of the country. These results strengthen the need to establish school vision screening.
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