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Re: Holden et al.: Global prevalence of myopia and high myopia and temporal trends from 2000 through 2050 (Ophthalmology 2016;123:1036-1042)

      I read with interest the systematic review and meta-analysis by Holden et al,
      • Holden B.A.
      • Fricke T.R.
      • Wilson D.A.
      • et al.
      Global prevalence of myopia and high myopia and temporal trends from 2000 through 2050.
      particularly the authors' reason for not presenting disaggregated data by gender. The authors state that gender differences vary between reported studies, potentially indicating a complex gender effect.
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      References

        • Holden B.A.
        • Fricke T.R.
        • Wilson D.A.
        • et al.
        Global prevalence of myopia and high myopia and temporal trends from 2000 through 2050.
        Ophthalmology. 2016; 123: 1036-1042
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        • Wathern A.K.
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        Global variations and time trends in the prevalence of childhood myopia, a systematic review and quantitative meta-analysis: implications for aetiology and early prevention.
        Br J Ophthalmol. 2016 Jan 22; (pii: bjophthalmol-2015-307724. [Epub ahead of print])https://doi.org/10.1136/bjophthalmol-2015-307724
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      Linked Article

      • Global Prevalence of Myopia and High Myopia and Temporal Trends from 2000 through 2050
        OphthalmologyVol. 123Issue 5
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          Myopia is a common cause of vision loss, with uncorrected myopia the leading cause of distance vision impairment globally. Individual studies show variations in the prevalence of myopia and high myopia between regions and ethnic groups, and there continues to be uncertainty regarding increasing prevalence of myopia.
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        Open Access
      • Reply
        OphthalmologyVol. 124Issue 3
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          We appreciate Dr Bruce's interest in our paper and share her intrigue on the nature of the interaction between gender and myopia.1 Some papers included in our systematic review and meta-analysis provide age- and sex-specific data as Dr Bruce notes, but many do not. In addition to data availability, our analysis suggested that age, urbanization, location, and ethnicity had stronger effects than sex or gender on myopia prevalence, so we prioritized maintaining disaggregation and statistical strength accordingly.
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