How LASIK Works


LASIK is an amazingly fast procedure – it only takes a few minutes per eye. That’s just a few minutes to possibly erase a vision condition you’ve had your entire life!

how-lasik-works1.pngStep 1: Corneal Flap Formation There are two methods that can be used to create a micro-thin flap of tissue on the corneal surface, which allows the surgeon access to the deeper layers of the cornea.

  • Flap Formation with the advanced IntraLase™ laser, also called Blade-free LASIK or All-Laser LASIK
  • Flap Formation with microkeratome, a hand-held spinning blade

how-lasik-works2.pngStep 2: Tissue Ablation (Removal)

  • After the flap is created, the next step is to remove corneal tissue below. Dr. Gupta uses the VISX™ STAR S4 IR Excimer Laser System that uses a beam of cool ultraviolet light to reshape the cornea.
  • If nearsighted, the goal is to flatten the cornea • If farsighted, the goal is to make the cornea steeper
  • With astigmatism, the goal is to smooth an irregularly shaped cornea After Dr. Gupta has reshaped the cornea, the flap is folded down again, creating a natural bandage which promotes healing.

Advanced LASIK Technology At Cleveland Clinic Sugarbush Eye and Laser Centre, we believe in providing our patients with the best possible options to improve their vision. We invest in great technology to reach that goal.


Dr. Gupta prefers the FDA-approved IntraLase laser method for flap creation, an inside-out process that takes place under the surface of the cornea. Light pulses from the laser, as fast as one-quadrillionth of a second, creating thousands of microscopic bubbles made of water vapor and carbon dioxide. These bubbles disappear helping the flap of pre-determined thickness to be created.

This laser safely and precisely designs a flap that suits your cornea to the exact diameter, depth, hinge location and overall make-up your eye needs for a successful operation. It is impossible to match this accuracy with a manual blade, such as the microkeratome.

Independent studies have shown that more patients achieved 20/20 vision or better with IntraLase compared to a microkeratome, with 78% of LASIK patients choosing the IntraLase method. IntraLase patients have a reduced incidence of dry eye symptoms and require fewer touch-up procedures.


Our FDA-approved VISX STAR S4 IR Excimer Laser System and CustomVue Wavefront represent the most advanced laser technology platforms available today. The VISX laser system has been used to perform more than two million laser vision correction procedures. VISX STAR S4 IR combines Variable Spot Scanning (VSS) and Infrared ActiveTrak 3-D Active Eye Tracking along with waves providing Dr. Gupta with the newest and best treatment options for our patients. VISX STAR S4 IR adds a new level of precision, comfort and safety.

  • Precision. VISX STAR S4 IR Laser System produces seven variable sized beams giving your doctor greater flexibility and allowing for a fast, smooth treatment with precise corneal shaping. It incorporates a sophisticated array of seven beam diameters to give you a personalized treatment which may result in reduced problems with night vision (patients with large pupils).
  • Accuracy. VISX STAR S4 IR Laser System can correct vision beyond contacts and glasses when coupled with the VISX CustomVue WaveScan and Iris Registration and ActiveTrak technologies. This means that most patients with this technology see better than they ever did with their glasses or contact lenses. The VISX WaveScan aberometer, a powerful diagnostic tool which helps determine your treatment plan, uses over 200 points of light reflected off your retina to map the imperfections throughout your entire visual pathway. It creates a “fingerprint” of your vision 25 times more precise than previously possible. The data from the WaveScan aberometer is downloaded to the VISX STAR S4 IR Laser System providing an automated transfer of data on the day of surgery. With this technology, the end result of surgery means not only having improved vision with regard to distance, but also crispness and clarity.
  • Comfort. VISX STAR S4 allows your doctor to track eye movement during laser treatment with no dilation leading to improved comfort and greater recovery time.
  • Safety. In order for the procedure to be successful, the laser must remain directly in the targeted area of the cornea. Our eyes make involuntary jumping movements (called “saccadic movements”) which complicate the operation; however, VISX STAR S4 IR incorporates the use of infrared 3-D eye tracking technology. The laser detects and compensates for small eye movements by guiding the laser beam to keep it centered precisely over the treatment area.
  • Summary. VISX with its array of seven variable spot scanning beams, 3-D infrared tracking and large ablation zones, provides our patients with uncompromising quality in surgical outcomes. IntraLase, Wavefront LASIK and Wavefront PRK are approved by the U.S. Bureau of Naval Aviation and the U.S. Air Force to be performed on Naval Aviators and Air Craft Carrier Pilots. As of June 2007, more than 1,000 Naval Aviators and Air Craft Carrier Pilots had under gone these procedures.

Please review the videos below to learn more. Select the title of the video to begin watching.  

 Learn about iLasik


Learn About PRK


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