Lasik (traditional procedure)

Traditional LASIK uses a microkeratome (micro-blade) in the first step to cut the corneal flap that is opened up to expose the deeper underlying corneal tissue that is then treated in a second step by an excimer laser. The flap is then laid back in place and protects the area where corneal tissue was removed. 
In Step One, your doctor creates a micro-thin flap of tissue on the outer layer of your eye, also known as the cornea. The flap is important for rapid healing, greater comfort and better vision. If it is too thick, too thin, or irregular, it could affect the quality of your vision. Although complications with LASIK surgery are rare, when they do occur, they are often associated with the use of a hand-held microkeratome blade in Step One.

Femto-LASIK with the Femto Second Laser (Laser-LASIK, IntraLasik, Intralase)

Lasik surgery involves two basic steps: creating a corneal flap and reshaping the cornea according to prescription. Traditionally, the corneal flap during LASIK has been created with a microkeratome blade. It is well documented that a large part of the risks and complications from LASIK arise during the creation of the flap. Surgical techniques have been modified and instruments have been refined to improve the results and decrease complications, but nothing has made as significant an impact on improving LASIK as the IntraLase femtosecond laser.
IntraLase prepares the corneal flap with a laser called femtosecond-laser in step One. In Step Two, your doctor folds open the flap so that an excimer laser can be used on the inner cornea to correct your vision. When treatment is complete, the flap is repositioned.