Yes, there are two main types of laser vision procedures: LASIK and PRK. With LASIK, a thin flap is constructed, the flap is retracted, tissue is removed with an excimer laser, and then the flap is re-positioned. This results in a change in the contour of the cornea resulting in vision correction. The other technique is called PRK. This procedure initially involves removal of the central corneal epithelium and is followed by removal of corneal tissue with an excimer laser. A soft contact lens is worn for 5 days while the underlying epithelium regenerates.