Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

127 questions · 128 findings · 10 reviews · Eyes and Vision

No studies found 36 · 28.1%GRADE not reported 6 · 4.7%Very low 29 · 22.7%Low 35 · 27.3%Moderate 22 · 17.2%High 0 · 0%