LASIK, or Laser Assisted In-Situ Keratomileusis is a surgical procedure for myopia (nearsightedness), hyperopia (farsightedness) and astigmatism correction.
LASIK eye surgery is performed using a laser to gently reshape the cornea under a protective flap of tissue. Lake Austin Eye uses only FDA approved technology for this procedure, including the Nidek and VISX laser systems.
LASIK vision correction utilizes two proven surgical procedures to correct vision errors; the creation of a corneal flap and the use of the computer-controlled excimer laser. The creation of the corneal flap was first introduced more than 30 years ago and has been successfully performed and perfected by surgeons worldwide. Using a femtosecond laser, a protective flap of corneal tissue is created which covers the area to be reshaped by the laser. This protective flap facilitates rapid vision recovery and reduces discomfort after LASIK eye surgery.
The second technique uses a computer-controlled excimer laser with a cold, ultraviolet beam to gently sculpt the cornea, removing microscopic amounts of tissue to change the shape and allow the eye to focus more clearly.
The shape or curvature of the cornea affects the eye’s focusing ability. In nearsighted patients, the laser will flatten the curvature of the cornea. In farsighted patients, the laser steepens the cornea. For patients with astigmatism, the laser will contour or make the cornea more spherical in shape.
ASA, or Advanced Surface Ablation, is when the surface cells of the cornea, or the epithelium, is removed prior to the laser treatment. This procedure is performed if your doctor decides that a flap creation is not the right choice for you. This may be because your cornea is thin, your surface is irregular, or for a variety of other reasons. After ASA, your vision will take longer to recover (1-2 weeks) but the end-result is the same.