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LASIK or Laser In-Situ Keratomileusis reshapes the cornea by removing tissue beneath the surface of the cornea. LASIK combines the accuracy of the Excimer Laser with the benefits of Lamellar Keratoplasty (LK). First, a device called a microkeratome lifts a thin layer of the cornea. This layer, or flap, is then folded back. Next, a cool beam of light gently reshapes the outer surface of the cornea. The laser treatment typically takes less than one minute, and the flap is replaced in its original position.
LASIK is performed on an outpatient basis and takes only a few minutes. You will remain awake during the procedure and the only anesthetic you will need is eye drops. Anticipate being at the laser facility about one hour on the day of the procedure. Most patients experience improved vision the same day and are able to return to work the very next day. You will take antibiotic and anti-inflammatory drops four times a day for one week following your procedure. Some of the advantages of LASIK are little or no postoperative discomfort, waking with good vision the following morning, being back at work quickly, and eye drops are used for less than a week.
PRK For more information on LASIK and PRK click on the following FAQ links.
Custom-LASIK and Custom-PRK No two eyes are alike, and like your DNA or fingerprint, your vision is unique. For hundreds of years, glasses have been used to correct vision Dr. Gollance offers the technological advantage of Custom wavefront guided laser vision correction. Custom laser correction involves a diagnostic device that maps the entire optical path of your eye, including the tiny distortions and imperfections naturally present in all eyes. This is effectively a unique "fingerprint of your vision," and provides us with extremely precise and detailed information about your vision. The technology involved is highly complex, and it is based upon mathematical techniques used to improve the performance and image quality of deep space telescopes. This customized unique map of your eye is then loaded into the computer of the excimer laser which generates a wavefront customized treatment appropriate for the individual "fingerprint" of your eye. Results of an FDA clinical trial of this technology demonstrated that an incredible 94% of patients treated were able to see 20/20 or better without glasses. Four times as many people in the trial were very satisfied with their night vision after LASIK, compared to their night vision before with glasses or contacts. These results are superior to those obtained with standard laser correction, and the dramatic improvement in night vision may be the greatest single advantage of Custom laser correction. Custom correction can be applied to both LASIK and PRK treatment.
You are probably already familiar with one application of wavefront guided optical technology. In December, 1993 Space Shuttle Mission STS-61 installed the COSTAR (Corrective Optics Space Telescope Axial Replacement) upgrade to the Hubble Space telescope to correct spherical aberration in the lens system of the telescope. Spherical aberration is one of the main phenomena corrected by Custom wavefront guided laser vision correction.
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PRK was the original corneal laser procedure approved in the United States. The accuracy of this procedure is virtually identical to LASIK. PRK may be preferred for certain patients with very thin corneas, as it does not involve the creation of a flap. This is a completely bladeless approach to eye surgery, which is also attractive to some patients. Disadvantages include slightly more discomfort post-operatively, and a slower return of vision as compared to LASIK. In PRK, the surface cells of the cornea are removed, and the excimer laser reshapes the surface of the eye. A temporary contact lens is placed as the surface cells re-grow over the next few days. 
by eliminating one or more of the three basic elements of blurring; nearsightedness, farsightedness and astigmatism. However, advances in optics have demonstrated that these three basic elements are only part of the picture. There are tiny imperfections or distortions in every eye, even when the perfect glasses or contact prescription is used. To understand this further, imagine two people who visit the eye doctor and obtain exactly the same glasses prescription. Using standard laser correction, those two individuals would be treated with exactly the same laser treatment plan, despite the fact that their eyes each have a unique set of naturally occurring tiny imperfections and distortions. And while we have achieved excellent results by treating only these three basic elements (nearsightedness, farsightedness, and astigmatism), we can now offer even more. 
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