![]() In general, the prevalence of cataract not only varies by region but also by age group, and most cases are over the age of 60 years. Significant effects on heterogeneity were observed for the WHO region in the prevalence of any cataract ( b: 6.30 p: 0.005) and study year in the prevalence of nuclear cataract ( b: −0.66, p: 0.042). Of the 9922 identified articles, 45 studies with a sample size of 161,947 were included in the analysis, and most of them were from the Office for the Western Pacific Region (19 studies). For that, we used international databases such as PubMed, Web of Science, Scopus, Embase, and other sources of information to conduct a systematic search for all articles concerning the prevalence of age-related cataract and its types in different age groups. ![]() The aim of our study was to estimate regional and global cataract prevalence, its prevalence in different age groups, and the determinants of heterogeneity and its prevalence. ![]()
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