ISSN: 1300-0365
Dil: Türkçe
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ORIGINAL RESEARCH ARTICLES |
Evaluation Of Corneal Flap Thickness In Laser In Situ Keratomileusis Using Moria M2 Microkeratome
Dr. Sibel POLAT, a Dr. Çiğdem CAN, a Dr. Bayazıt İLHAN, a Dr. Orhan ZİLELİOĞLUa
a2. Göz Kliniği, Ankara Ulucanlar Göz Hastanesi, ANKARA
Objective: To investigate the flap thickness in laser in situ keratomileusis (LASIK) using Moria M2 microkeratome (disposable blade and head) and to identify the correlations between flap thickness and spheric equivalent, keratometry and central corneal thickness. Material and Methods: Moria M2 microkeratome and Aesculap Meditec Mel 70 excimer laser were used in all cases. A total of 159 eyes were included in this study. One hundred and three eyes operated with disposable blade (130 μm plate) and 56 eyes operated with 130 μm disposable head were classified as group 1 and 2, respectively. Flap thickness was calculated by subtracting the stromal bed thickness from preoperative central corneal thickness. Results: Mean flap thickness was 168.63±39.17 and 156.53±26.75 μm in group 1 and 2, respectively. The difference was statistically significant (p=0.041). There was no correlation between flap thickness and keratometry values in both groups (r=0.087, p=0.522 for group 1; r=0.042, p=0.757 for group 2). Also, there was no correlation between flap thickness and spheric equivalent in both groups (r=0.087, p=0.074 for group 1; r=0.075, p=0.581 for group 2). There was a positive correlation between flap thickness and preoperative central corneal thickness only in group 2 (r=0.0346, p=0.009). Conclusion: Flap thickness was variable and thicker than expected. The disposable head seems to produce more predictable flap thickness. Intraoperative pachymetry is advisable to prevent iatrogenic keratectasia after LASIK.Keywords: Keratomileusis, laser in situ, corneaTurkiye Klinikleri J Ophthalmol 2008, 17:11-15
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