Laser subepithelial keratomileusis ( LASEK ) versus femtosecond sub-Bowman keratomileusis ( FSBK ) to correct myopic astigmatism

Autor: M Garcia-Gonzalez, Ma Teus, Mluz Iglesias, Pilar Canadas Suarez
Rok vydání: 2012
Předmět:
Zdroj: Acta Ophthalmologica. 90
ISSN: 1755-375X
DOI: 10.1111/j.1755-3768.2012.t089.x
Popis: Purpose to compare the safety and efficacy of LASEK versus FSBK to correct myopic astigmatism Methods a retrospective pilot study of 846 consecutive eyes ( 427 FSBK and 419 LASEK + Mitomycin C ). Inclusion criteria was astigmatism ≥ -1.50 D. Uncorrected visual acuity ( UCVA ), best corrected visual acuity ( BCVA ), sphere and cilynder were examinated preoperatively and at 3 months after surgery. Enhancement rates were also evaluated. Results both techniques showed similar safety and efficacy indexes ( efficacy in LASEK group was 0.9 ± 0.2 and in FSBK group was 0.88 ± 0.2, p= 0.3; safety in LASEK group was 1.0 ± 0.1 and in FSBK group was 1.02 ± 0.1, p= 0.8.Three months after surgery, astigmatism was similar in both groups: -0.52 ± 0.6 in LASEK group and -0.54 ± 0.6 in FSBK group ( p= 0.6 ). The sphere was higher in LASEK group than in FSBK group( 0.24 ± 0.7 D, LASEK group; 0.12 ± 0.5 D, FSBK group ) p= 0.005. BCVA and UCVA were slightly better in FSBK group ( BCVA in FSBK group: 1.02 ± 0.1. BCVA in LASEK group: 0.9 ± 0.2; p= 0.0001. UCVA in FSBK group was 0.9 ± 0.2. UCVA in LASEK group was 0.86 ± 0.2; p=0.03. Enhancement rates were higher in FSBK group, 97 eyes ( 22.62% ), than in LASEK group, 65 eyes ( 15.51% ), p= 0.01. Conclusion LASEK and FSBK show similar safety and efficacy when used to correct myopic astigmatism ≥ -1.50 D. Postoperative BSCVA was slightly higher after FSBK, probably because it was also higher preoperatively, but the safety and efficacy indexes showed no significant differences between groups. Nevertheless there is a higher retreatment rate after FSBK . This might be due to the more comfortable post-operative recovery of this technique.
Databáze: OpenAIRE
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