[Efficacy and safety of laser-assisted in situ keratomileusis for myopia].
BACKGROUND
The aim of this study was to assess the efficacy, frequency of re-operation and type and frequency of complications after laser-assisted in situ keratomileusis (LASIK) treatment for moderate to high levels of myopia.


METHODS
357 eyes from 190 patients were reviewed. The mean of the preoperative correction was -8.38 D (-1.75; -16 D) sph. (spherical), -1.00 D (0; 4.5 D) astigmatism. 15% (55 eyes) were re-treated. The mean of the correction before re-treatment was -2.78 D (+2.25; -11.00 D) sph., -0.43 D (0; -2.00 D) astigmatism.


RESULTS
The three-month follow-up rate was 96% for primarily treated eyes and 99% for re-treated eyes. Where full correction was intended, 53% of the primarily treated and 93% of the re-treated eyes achieved an uncorrected visual acuity of > or =0.5. The refractive error for myopia less than -8 D was -0.80 D +/- 0.83 D and -1.37 D +/- 1.33 D for myopia -8 D and above after one treatment and -0.47 +/- 0.66 D after re-treatment. 1.2% (4) of the primarily treated and 3.9% (2) of the retreated eyes lost more than two lines in best spectacle-corrected visual acuity (BCVA).


CONCLUSIONS
LASIK treatment for moderate to high levels of myopia leads in all cases to a reduced degree of myopia. There is a significant degree of unreliability on the accuracy of the treatment with a tendency to under correction. Postoperatively, many patients still have to use correction for distance vision. Significant loss of visual acuity occurs infrequently.
Beer
Mette Hjuler
MH
Arhus Universitetshospital, Arhus Sygehus, Øjenafdelingen.
Hjortdal
Jesper Ø
JØ
Ehlers
Niels
N
D000328:Adult; D005260:Female; D006801:Humans; D020731:Keratomileusis, Laser In Situ; D008297:Male; D009216:Myopia / Q000601:surgery*; D012086:Reoperation; D012189:Retrospective Studies; D012449:Safety; D016896:Treatment Outcome; D014792:Visual Acuity