The Impact of Learning Curve on Flap Thickness Outcome in Femtosecond Laser-assisted Laser In Situ Keratomileusis Performed with New LenSx Dual Platform
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Purpose: To evaluate the effect of learning curve on flap thickness (FT) outcome in femtosecond (FS) laser-assisted laser insitu keratomileusis (LASIK) operation for myopia performed with recently introduced LenSx dual platform using curved applanationcone. Methods: Seventy eyes of 36 patients with myopia or myopic astigmatism operated with FS laser-assisted LASIK with recentlyintroduced LenSx dual platform were evaluated in this retrospective study. Operations were divided into two groups: first20 operations (20 eyes of 10 patients) and next 50 operations (50 eyes of 26 patients). Data on patient demographics, preoperativeand postoperative keratometric and aberrometric parameters, and FT related outcome, including mean central FT,mean total FT, intra-FT range, and FT homogeneity were compared in study groups. Results: Except for significantly lower preoperative steepest keratometry values in the next 50 operations versus first 20operations (p = 0.033), no significant difference was noted between study groups in terms of preoperative and postoperativeparameters. When compared to first 20 operations, next 50 operations were associated with significantly higher values formean central FT (median, 123 μm vs. 114 μm; p = 0.007) and mean total FT (median, 123 μm vs. 113 μm; p = 0.015), whereassignificantly lower intra-FT range (median, 4.0 μm vs. 4.5 μm; p = 0.003). Conclusions: In conclusion, our findings related to FS laser-assisted LASIK surgery for myopia with new LenSx dual platformusing curved applanation cone revealed significant impact of learning curve on the corneal FT outcome in terms of closer FTto the intended value and lower intra-flap range.
Abstract
Purpose: To evaluate the effect of learning curve on flap thickness (FT) outcome in femtosecond (FS) laser-assisted laser insitu keratomileusis (LASIK) operation for myopia performed with recently introduced LenSx dual platform using curved applanationcone. Methods: Seventy eyes of 36 patients with myopia or myopic astigmatism operated with FS laser-assisted LASIK with recentlyintroduced LenSx dual platform were evaluated in this retrospective study. Operations were divided into two groups: first20 operations (20 eyes of 10 patients) and next 50 operations (50 eyes of 26 patients). Data on patient demographics, preoperativeand postoperative keratometric and aberrometric parameters, and FT related outcome, including mean central FT,mean total FT, intra-FT range, and FT homogeneity were compared in study groups. Results: Except for significantly lower preoperative steepest keratometry values in the next 50 operations versus first 20operations (p = 0.033), no significant difference was noted between study groups in terms of preoperative and postoperativeparameters. When compared to first 20 operations, next 50 operations were associated with significantly higher values formean central FT (median, 123 μm vs. 114 μm; p = 0.007) and mean total FT (median, 123 μm vs. 113 μm; p = 0.015), whereassignificantly lower intra-FT range (median, 4.0 μm vs. 4.5 μm; p = 0.003). Conclusions: In conclusion, our findings related to FS laser-assisted LASIK surgery for myopia with new LenSx dual platformusing curved applanation cone revealed significant impact of learning curve on the corneal FT outcome in terms of closer FTto the intended value and lower intra-flap range.
참고문헌 (23)
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