Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

219 questions · 223 findings · 25 reviews · Eyes and Vision

No studies found 76 · 34.1%GRADE not reported 5 · 2.2%Very low 39 · 17.5%Low 75 · 33.6%Moderate 25 · 11.2%High 3 · 1.3%