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| Lasik-Laser > LASIK Surgery | |||||||
Since the late 1970's incisional refractive surgery (RK) has treated nearsightedness and astigmatism in patients all over the world, allowing them to experience a new kind of freedom. It's the kind of freedom that allows people to make lifestyle choices that were not options to them before because they were totally dependent on glasses or contact lenses. Now, refractive surgery is experiencing the dawning of a new era with the advent of the excimer. For nearly 25% of the population excimer Laser in-Situ Keratomileusis, or LASIK, could represent the first step towards less dependence on corrective lenses. |
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| LASIK combines the precision of the excimer laser delivery system with the benefits of Lamellar Keratoplasty (LK) proven to treat a wide range of refractive errors. In the United States, LASIK is considered to be an "off-label" use of the excimer laser. This classification allows physicians to perform the procedure if they fell it is in the best interest of the patient. How successful is the procedure? The vast majority of people who undergo LASIK are able to pass a drivers' license test without their glasses or contacts. Since LASIK can be used to treat very high levels of refractive errors, it is sometimes necessary to fine tune the initial procedure with additional refractive procedures to obtain the best final result. |
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Utilizing the accuracy and precision of the excimer laser LASIK changes the shape of the cornea to improve the way light is focused or "refracted" by the eye. First, a thin layer of the cornea of corneal cap, is lifted up as an instrument called a microkeratome glides across the cornea. Then, in less than 60 seconds, ultraviolet light and high energy pulses from the excimer laser reshape the internal cornea with accuracy up to 0.25 microns. By adjusting the pattern of the laser beam, it is possible to treat high levels of nearsightedness, and moderate amounts of farsightedness and astigmatism. |
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After the tissue has been reshaped, the flap is replaced in its original position. Because of the cornea's extraordinary natural bonding qualities, healing is rapid and does not require stitches. In most cases LASIK is performed as an outpatient procedure in the comfort and convenience of an excimer surgical suite. The entire procedure takes less than 30 minutes. |
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The procedure is performed using "eye drop" anesthesia. Some patients reports a slight, postoperative discomfort that can usually by alleviated with medications. Many patients see a dramatic improvement in their vision within the first day. For others, vision may be blurry and fluctuate for several weeks or more. Most Patients return to their normal activities within a day or two. |
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