Evaluation of LASIK retreatment after aborted LASIK due to flap complications

Abstract

Objective To evaluate the laser in situ keratomileusis (LASIK) retreatment results after aborted primary LASIK due to flap complications.Methods This retrospective study included 28 LASIK retreatment eyes that had flap complications during primary LASIK.The data were analyzed for at least 3 months after retreatment.Including uncorrected visual acuity,best corrected visual acuity,and preoperative and postoperative complications.Results The primary LASIK was aborted due to incomplete flaps in 19 eyes (67.9％),partial free flaps in 2 eyes (7.1％),thin flap in l eye (3.6％),buttonhole flaps in 6 eyes (21.4％).The mean spherical equivalent was (-0.38 ± 0.91) D,the mean loss of the best corrected visual acuity was 0.95 lines,a loss of ＞ 2 lines of BCVA occurred in 2 (7.1％) of the 28 eyes that were with a significant central corneal scar secondary to buttonhole flap.At the final postoperative visit,Uncorrected visual acuity ≥ 1.0 was obtained in 53.6％ of eyes,≥0.5 in 85.7％ ; and the best corrected visual acuity≥l.0 was obtained in 60.7％ of eyes,≥0.5 in 92.9％.Of those retreatment eyes,only 1 eye (3.6％) occurred epithelial ingrowth,and there were no intraoperative complications and no eyes required a secondary retreatment.Conclusion Recutting the cornea after a previous intraoperative flap complication was not associated with another flap complication,LASIK retreatment after aborted LASIK due to flap complications is safe and effective. Key words: Keratomileusis; laser in situ; Myopia; Complication,intraoperative; Outcome; operation; second time