In any LASIK procedure the first step is to create a corneal flap. In standard LASIK the surgeon uses a hand-held oscillating blade called microkeratome to cut the corneal flap. The flap is then folded and the Bausch and Lomb Excimer laser treats the cornea to correct the refractive error.
Wavefront guided treatment takes care of all the preoperative aberration of the total optical system.