Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

319 questions · 323 findings · 28 reviews · Eyes and Vision

No studies found 85 · 26.3%GRADE not reported 10 · 3.1%Very low 80 · 24.8%Low 103 · 31.9%Moderate 41 · 12.7%High 4 · 1.2%