ACTUAL VERSUS EXPECTED LASIK FLAP THICKNESS USING THE MORIA M2 130 MICROKERATOME HEAD
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AIM: To evaluate actual versus expected laser in situ keratomileusis (LASIK) flap thickness using the Mona M2.130 microkeratome head. METHODS: 50 eyes of 25 patients scheduled for LASIK surgery for myopia where enrolled in this study Patients were prepared for surgery. On the day of surgery they were admitted to the LASIK room where the lids were sterilized and draped. A suction lid speculum was applied to one eye after instilling one drop of Benox into the conjunctival sac, the eye was then washed with balanced salt solution BSS and the suction of the lid speculum activated to assure there was no excess BSS in the conjunctival sac then a final preoperative ultrasonic central corneal pachymetry reading using the sterile probe of the Tomey AL-2000 .pachymer was recorded. The suction ring of the Mona M2 milcroketatome was centered on the cornea and immediately after the lasik flap was fashioned and the suction ring removed the flap was elevated then an intra operative central stromal bed pachmetry reading was recorded using the sterile Tomey AL- 2000 pachymer probe. The actual flap thickness was calculated by subtracting the intra operative central stromal thickness from the preoperative central corneal thickness.