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Meta-Analysis
. 2022 Jun;7(1):e000949.
doi: 10.1136/bmjophth-2021-000949.

Pooled prevalence of blindness in Ethiopia: a systematic review and meta-analysis

Merkineh Markos  1 , Biruktayit Kefyalew  2 , Hana Belay Tesfaye  3
Affiliations
Meta-Analysis

Pooled prevalence of blindness in Ethiopia: a systematic review and meta-analysis

Merkineh Markos et al. BMJ Open Ophthalmol. 2022 Jun.

Abstract

Blindness is defined as presenting visual acuity worse than 3/60 in the better eye. Its highest proportion has been conforming to the developing countries such as Ethiopia. So, timely information is crucial to design strategies. However, the study on the magnitude of blindness in Ethiopia was outdated which means it was conducted in 2005-2006. Therefore, this study was proposed to estimate the pooled prevalence of blindness in Ethiopia.Databases like PubMed, Cochrane library, Google Scholar and references of retrieved articles were used to search for articles. A standard data extraction approach was employed and presented using Preferred Reporting of Items for Systematic Reviews and Meta-Analyses. The Newcastle-Ottawa Scale quality assessment tool was used to evaluate the quality of studies. Analysis held using STATA V.11. The funnel plot and Egger's regression test were applied to check for the potential sources of bias. Heterogeneity among the studies was tested using I² statistics that have been calculated and compared with the standard. Meta-regression and subgroup analysis were done to identify the potential sources of heterogeneity. Estimation of blindness was carried out using Duval and Twee die's trim and fill analysis. The pooled prevalence of blindness in Ethiopia is found to be 1.18% (95% CI 0.650% to 1.706%). Blindness is among the main public health difficulties in Ethiopia. So, it demands up-to-date strategies and its implementation, preventive and curative eye care service with affordable and accessible interventions, and evidence-based advocacy. The trial Registration Number is CRD42021268448.

Keywords: anterior chamber; colour vision; cornea; epidemiology; eye (globe); glaucoma; low vision aid; macula.

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Conflict of interest statement

Competing interests: None declared.

Figures

Figure 1
Figure 1
Forest plot representing the pooled prevalence of blindness in Ethiopia, 2021.
Figure 2
Figure 2
The funnel plot of meta-analysis in the pooled prevalence of blindness in Ethiopia including 21 studies, 2021
See this image and copyright information in PMC

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