Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

31 questions · 31 findings · 3 reviews · Eyes and Vision

No studies found 12 · 38.7%GRADE not reported 0 · 0%Very low 5 · 16.1%Low 6 · 19.4%Moderate 8 · 25.8%High 0 · 0%

Photobiomodulation treatment vs no treatment/sham

Adverse events: AMD progression at 12 months Defined as increased drusen volume or onset of advanced AMD. Conversion to exudative AMD at 12 months Assessed by clinical examination and retinal optical coherence tomography. · people with non‐exudative AMD (AREDS 2 to 4)

Photobiomodulation treatment showed no clear difference in adverse events: AMD progression at 12 months Defined as increased… compared with sham or no treatment (low certainty).

1 finding from 1 review

Transepithelial CXL using iontophoresis vs epithelium‐off CXL

Proportion of participants whose maximum K increased by at least 2 diopters—at 24 months · participants with progressive keratoconus

It is very uncertain whether transepithelial CXL using iontophoresis changes proportion of participants whose maximum K increased by at least 2… compared with epithelium‐off CXL (very low certainty).

1 finding from 1 review

Transepithelial CXL vs epithelium‐off CXL

Proportion of participants whose maximum K increased by at least 2 diopters—at 12 months · participants with keratoconus

It is very uncertain whether transepithelial CXL changes proportion of participants whose maximum K increased by at least 2… compared with epithelium‐off CXL (very low certainty).

1 finding from 1 review