2020
DOI: 10.1155/2020/4710328
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Visual Impairment Prevalence, Causes, and Role of Healthcare Access: A Systematic Review and Meta-Analysis in Iran

Abstract: Purpose. Healthcare access is one of the determinants of visual impairment (VI), as a public health problem. The objective of this study was to estimate VI prevalence, related causes, and its correlation with access to physicians in Iran. Methods: This systematic review and meta-analysis include observational studies published in Iran. PubMed, Web of Science, Scopus, Google Scholar, and local databases were systematically searched by using the MeSH headings. Data on the provincial distribution of physicians, a… Show more

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Cited by 9 publications
(4 citation statements)
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“…The pooled prevalence of visual impairment was 22% (95% CI: 17–27%) which is in line with the study done in West Africa (17.1%) [ 28 ] and 14.1% in worldwide meta-analysis report [ 29 ]. On the other hand, our study is higher than meta-analysis study in England 3.6% [ 30 ], in United states 7.08% (95%CI: 6.32–7.89) [ 31 ], in Europeans 2.22% (95% CI: 1.34–3.10) [ 32 ], 5.57% (95% CI: 4.71–6.43%) in Iran [ 33 ], 10.9% (95% CI = 9.4%-12.6%) in China [ 34 ] and 4.2% in Nigeria (95% CI: 3.8%–4.6%) [ 35 ]. The discrepancy might be due to the time of the study, the cut of point to diagnosis visual impairment, types of study population, health-seeking behavior of the study participants, social-cultural differences, or access to health care services.…”
Section: Discussionmentioning
confidence: 58%
“…The pooled prevalence of visual impairment was 22% (95% CI: 17–27%) which is in line with the study done in West Africa (17.1%) [ 28 ] and 14.1% in worldwide meta-analysis report [ 29 ]. On the other hand, our study is higher than meta-analysis study in England 3.6% [ 30 ], in United states 7.08% (95%CI: 6.32–7.89) [ 31 ], in Europeans 2.22% (95% CI: 1.34–3.10) [ 32 ], 5.57% (95% CI: 4.71–6.43%) in Iran [ 33 ], 10.9% (95% CI = 9.4%-12.6%) in China [ 34 ] and 4.2% in Nigeria (95% CI: 3.8%–4.6%) [ 35 ]. The discrepancy might be due to the time of the study, the cut of point to diagnosis visual impairment, types of study population, health-seeking behavior of the study participants, social-cultural differences, or access to health care services.…”
Section: Discussionmentioning
confidence: 58%
“…Globally, it is estimated that by 2050, 360 million and 474 million people will have mild and moderate-to-severe visual impairments, respectively ( Bourne et al, 2020 ). In Iran, the prevalence of visual impairment was reported to be 5.57% in 2020 ( Afarid et al, 2020 ).…”
Section: Introductionmentioning
confidence: 99%
“…In this systematic review and meta-analysis, the estimated pooled prevalence after correction for Duval and Tweedie’s trim and fill analysis was found to be 6.24% (95% CI = [2.66, 9.82]). Our finding is consistent with the national survey of visual impairment conducted in Nigeria and South Africa with an estimated prevalence of visual impairment of 3.5% (Entekume et al, 2011) and 9.2% (Addo et al, 2021), respectively, and a similar systematic review and meta-analysis conducted in Iran with an estimated prevalence of 5.57% (Afarid et al, 2020). But higher than the global estimate of visual impairment in 2020 with an estimated prevalence of 2.81% (Bourne et al, 2020).…”
Section: Resultsmentioning
confidence: 99%