Types of Laser Vision Correction
Bladeless Custom LASIK
LASIK, which stands for laser in-situ keratomileusis, is a procedure that uses a laser to change the shape of the cornea in order to improve myopia (nearsightedness), hyperopia (farsightedness) and astigmatism. LASIK can easily be explained as a 3-step procedure, in which the first step is creation of a corneal flap. In the past, we used to use an instrument called a microkeratome to create the corneal flap, but today’s technology allows us to use a laser to create the flap. Once the flap is created, another custom wavefront guided laser is used to resurface the underlying layers of the cornea to correct your refractive error. Finally, the corneal flap is placed into the original position. The healing process is generally fast, and there is minimal discomfort associated with LASIK.
PRK and LASEK
Photorefractive Keratectomy, or PRK, is a laser vision correction procedure in which the first layer of the cornea is removed, and the underlying tissues of the cornea are treated with the custom wavefront guided laser. The healing time with PRK is slower than that of LASIK, but some may consider it a safer procedure.
LASEK, or laser assisted sub-epithelial keratectomy, is very similar to PRK except that the first layer of the cornea is saved and then placed back over the laser treated layers of the cornea. In some patients, the healing time of LASEK may be quicker than that of PRK.