Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,079 questions · 2,112 findings · 171 reviews · Eyes and Vision

No studies found 587 · 27.8%GRADE not reported 95 · 4.5%Very low 446 · 21.1%Low 557 · 26.4%Moderate 361 · 17.1%High 66 · 3.1%

Intervention not reported

Poor visual outcome (best‐corrected visual acuity worse than 6/60) · people with age‐related cataract

It is very uncertain whether the intervention changes poor visual outcome (best‐corrected visual acuity worse than 6/60) (very low certainty).

1 finding from 1 review

Intervention not reported

Punctate keratitis · people living in communities affected by O.volvulus

The intervention probably leads to lower punctate keratitis (moderate certainty).

1 finding from 1 review

Intervention not reported

Sclerosing keratitis · people living in communities affected by O.volvulus

The intervention showed no clear difference in sclerosing keratitis (low certainty).

1 finding from 1 review

Intervention not reported

Iridocyclitis · people living in communities affected by O.volvulus

The intervention probably leads to lower iridocyclitis (moderate certainty).

1 finding from 1 review