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Association of lipid-lowering drugs and antidiabetic drugs with age-related macular degeneration: a meta-analysis in Europeans
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    RE: Association of lipid-lowering drugs and antidiabetic drugs with age-related macular degeneration: a meta-analysis in Europeans

    Mauschitz et al. (1) conducted a meta-analysis to investigate the association of systemic medications with age-related macular degeneration (AMD) in the general population. A pooled odds ratios (95% confidence intervals [CIs]) of lipid-lowering drugs (LLD) and antidiabetic drugs for any AMD were 0.85 (0.79 to 0.91) and 0.78 (0.66 to 0.91), respectively. In contrast, late AMD was not significantly associated with systemic medications. There is an information that antidiabetics, lipid-lowering agents, and antioxidants could theoretically be repurposed for AMD treatment (2). I present information regarding the effect of antidiabetic medications on the risk of AMD.

    Blitzer et al. (3) conducted a case-control study and metformin use was significantly associated with reduced odds of AMD, presenting dose dependent manner. But metformin did not have an effect of protecting diabetic retinopathy. In contrast, Gokhale et al. (4) conducted a retrospective cohort study to evaluate the effect of metformin on the risk reduction of AMD. The adjusted hazard ratio (95% CI) of patients prescribed metformin (with or without other antidiabetic medications) against those prescribed any other antidiabetic medication only for AMD was 1.02 (0.92 to 1.12). Vergroesen et al. (5) conducted a cohort study and a lower risk of AMD was not observed in patients with metformin, but other diabetes medication was significantly associated with a lower risk of AMD.

    Anyway, clinical trials are nee...

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    Conflict of Interest:
    None declared.