Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

322 questions · 324 findings · 25 reviews · Eyes and Vision

No studies found 77 · 23.8%GRADE not reported 5 · 1.5%Very low 77 · 23.8%Low 64 · 19.8%Moderate 91 · 28.1%High 10 · 3.1%

Blood pressure intervention/intensive blood pressure intervention vs placebo/standard blood pressure intervention

Change in visual loss associated with PSR: visual loss is defined by the deterioration of visual acuity of 3 lines or more with the Snellen chart · type 1 or type 2 diabetics

It is very uncertain whether blood pressure intervention/intensive blood pressure intervention changes visual acuity (loss of 3 lines or more) by 5 years compared with placebo/standard blood pressure intervention (very low certainty).

1 finding from 1 review

Blood pressure intervention/intensive blood pressure intervention vs placebo/standard blood pressure intervention

Adverse events: hypotension · type 1 or type 2 diabetics

Blood pressure intervention/intensive blood pressure intervention may leads to higher adverse events—hypotension compared with placebo/standard blood pressure intervention (low certainty).

1 finding from 1 review