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%

Laser‐assisted in‐situ keratomileusis (LASIK) vs photorefractive keratectomy (PRK)

Proportion of eyes with uncorrected visual acuity (UCVA) of 20/20 or better post‐treatment. ‐ 12 months · patients with myopia

Laser‐assisted in‐situ keratomileusis (LASIK) may leads to higher UCVA of 20/20 or better compared with photorefractive keratectomy (PRK) (low certainty).

1 finding from 1 review

Laser‐assisted in‐situ keratomileusis (LASIK) vs photorefractive keratectomy (PRK)

Eyes within ± 0.5 D of target refraction · patients with myopia

Laser‐assisted in‐situ keratomileusis (LASIK) showed no clear difference in within 0.50 D of target refraction compared with photorefractive keratectomy (PRK) (low certainty).

1 finding from 1 review

Laser‐assisted in‐situ keratomileusis (LASIK) vs photorefractive keratectomy (PRK)

Lost one or more lines of BCVA · patients with myopia

Laser‐assisted in‐situ keratomileusis (LASIK) showed no clear difference in lost one or more lines of BCVA compared with photorefractive keratectomy (PRK) (low certainty).

1 finding from 1 review

Laser‐assisted in‐situ keratomileusis (LASIK) vs photorefractive keratectomy (PRK)

Final BCVA of 20/40 or less · patients with myopia

It is very uncertain whether laser‐assisted in‐situ keratomileusis (LASIK) changes final BCVA of 20/40 or less compared with photorefractive keratectomy (PRK) (very low certainty).

1 finding from 1 review