Cochrane · systematic review · CD012946

Laser‐assisted in‐situ keratomileusis (LASIK) with a mechanical microkeratome compared to LASIK with a femtosecond laser for LASIK in adults with myopia or myopic astigmatism

Kahuam-López, N, Navas, A, Castillo-Salgado, C, et al. · Cochrane Database of Systematic Reviews · 2020 · Cochrane Library

Eyes and VisionAMSTAR 2: not assessed
SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
7
current version
GRADE rated
7
No studies
0
Included studies
NR
No studies 0 · 0%Ungraded 0 · 0%Very low 2 · 28.6%Low 5 · 71.4%Moderate 0 · 0%High 0 · 0%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

Questions and results

Laser‐assisted in‐situ keratomileusis (LASIK) with a mechanical microkeratome compared to LASIK with a femtosecond laser for LASIK in adults with myopia or myopic astigmatism

Population: adults (18 years) with more than 0.5 diopters of myopia or myopic astigmatism
7 questions
OutcomeEffectEvidenceStatus / GRADE
Mean UCVA, 12 months after surgery (unit LogMAR)
Laser‐assisted in‐situ keratomileusis (LASIK) with a mechanical microkeratome vs LASIK with a femtosecond laser
no estimate extracted1 study · 42 participantsLow
Downgraded: risk of bias, imprecision
Proportion of eyes within ± 0.5 diopters of target refraction, 12 months after surgery (unit diopters)
Laser‐assisted in‐situ keratomileusis (LASIK) with a mechanical microkeratome vs LASIK with a femtosecond laser
RR 0.97 [0.85, 1.11]1 study · 79 participantsLow
Downgraded: risk of bias, imprecision
Mean spherical equivalent of the refractive error, 12 months after surgery (unit diopters)
Laser‐assisted in‐situ keratomileusis (LASIK) with a mechanical microkeratome vs LASIK with a femtosecond laser
no estimate extracted3 studies · 168 participantsLow
Downgraded: risk of bias, imprecision
Corneal haze, any time point
Laser‐assisted in‐situ keratomileusis (LASIK) with a mechanical microkeratome vs LASIK with a femtosecond laser
RR 0.33 [0.01, 7.96]1 study · 86 participantsVery low
Downgraded: risk of bias, imprecision
Dry eye, any time point
Laser‐assisted in‐situ keratomileusis (LASIK) with a mechanical microkeratome vs LASIK with a femtosecond laser
RR 5.74 [2.92, 11.29]1 study · 183 participantsLow
Downgraded: risk of bias, imprecision
Diffuse lamellar keratitis, any time point
Laser‐assisted in‐situ keratomileusis (LASIK) with a mechanical microkeratome vs LASIK with a femtosecond laser
RR 0.27 [0.1, 0.78]3 studies · 134 participantsLow
Downgraded: risk of bias, imprecision
Epithelial ingrowth, any time point
Laser‐assisted in‐situ keratomileusis (LASIK) with a mechanical microkeratome vs LASIK with a femtosecond laser
RR 1.04 [0.11, 9.42]2 studies · 102 participantsVery low
Downgraded: risk of bias, imprecision