Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

418 questions · 423 findings · 44 reviews · Eyes and Vision

No studies found 122 · 28.8%GRADE not reported 26 · 6.1%Very low 98 · 23.2%Low 120 · 28.4%Moderate 53 · 12.5%High 4 · 0.9%