Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

34 questions · 34 findings · 10 reviews · Eyes and Vision · Headline outcomes only

No studies found 2 · 5.9%GRADE not reported 3 · 8.8%Very low 6 · 17.6%Low 14 · 41.2%Moderate 9 · 26.5%High 0 · 0%

Laser‐assisted in‐situ keratomileusis (LASIK) with a mechanical microkeratome vs LASIK with a femtosecond laser

Eyes within ± 0.5 D of target refraction · adults (18 years) with more than 0.5 diopters of myopia or myopic astigmatism

Laser‐assisted in‐situ keratomileusis (LASIK) with a mechanical… showed no clear difference in proportion of eyes within ± 0.5 diopters of target refraction, 12… compared with LASIK with a femtosecond laser (low certainty).

1 finding from 1 review

Wavefront‐optimized procedures vs wavefront‐guided procedures

Eyes within ± 0.5 D of target refraction · Adults with refractive errors

Wavefront‐optimized procedures showed no clear difference in proportion of eyes within ± 0.50 diopters (D) of target refraction… compared with wavefront‐guided procedures (low certainty).

1 finding from 1 review

Wavefront‐guided LASIK vs wavefront‐guided PRK

Eyes within ± 0.5 D of target refraction · Adults with refractive errors

It is very uncertain whether wavefront‐guided LASIK changes proportion of eyes within ± 0.50 diopters (D) of target refraction… compared with wavefront‐guided PRK (very low certainty).

1 finding from 1 review

Wavefront procedures vs conventional procedures

Proportion of eyes within ± 0.50 diopters (D) of target refraction: 12 months ‐ Procedure PRK · Adults with refractive errors

Wavefront procedures showed no clear difference in proportion of eyes within ± 0.50 diopters (D) of target refraction:… compared with conventional procedures (low certainty).

1 finding from 1 review

Toric intraocular lens (IOL) vs limbal relaxing incisions (LRIs)

Postoperative residual refractive astigmatism of less than 0.50 D · people with astigmatism who are having cataract surgery (phacoemulsification)

Toric intraocular lens (IOL) probably leads to higher postoperative residual refractive astigmatism of less than 0.50 D compared with limbal relaxing incisions (LRIs) (moderate certainty).

1 finding from 1 review