Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

3,006 questions · 3,171 findings · 607 reviews · Headline outcomes only

No studies found 411 · 13%GRADE not reported 153 · 4.8%Very low 968 · 30.5%Low 897 · 28.3%Moderate 589 · 18.6%High 153 · 4.8%

Intervention not reported

Uncorrected visual acuity (UCVA) (measured using logMAR scale. A score of 0 = good vision, higher score is worse vision) · people with keratoconus
1 finding from 1 review