Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

204 questions · 206 findings · 24 reviews · Headline outcomes only

No studies found 98 · 47.6%GRADE not reported 4 · 1.9%Very low 54 · 26.2%Low 43 · 20.9%Moderate 6 · 2.9%High 1 · 0.5%

Oral long‐chain omega‐3 PUFAs vs placebo or no treatment

Change in ocular surface staining at 1‐month (with actual · people with dry eyea

Oral long‐chain omega‐3 PUFAs (ie, EPA and DHA) showed no clear difference in change in ocular surface staining at 1‐month (with actual compared with placebo or no treatment (low certainty).

1 finding from 1 review