©2001 Buzard Eye Institute Terms of Use Site by Brett W. Bertram. Last Updated on April 18, 2003. Selected Images Licensed and © Stephen F. Gordon. |
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Dr. Buzard Acquires S2 Excimer Laser System An even greater level of refractive care now available with the addition of the latest and greatest vision correcting laser 05/20/98 -- The S2 is the newest addition to the laser surgery center at the Buzard Eye Institute. It is an upgrade to the previous VISX Star Excimer Laser System that allows for extremely smooth surfaces and greater accuracy. The excimer laser produces ultraviolet light which has the ability to remove corneal tissue almost without disturbing surrounding tissue. This ultraviolet light can then be shaped with lenses and controlled with a computer to actually create a corrective lens on the surface of the cornea. More nearsightedness would remove more corneal tissue while a small correction would require only a small amount of corneal tissue removal. Corneal tissue is removed simply by exposing tissue to the ultraviolet light. The longer the cornea is exposed to the beam of light, the more tissue is removed. A lens can actually be formed on the surface of the cornea by using diaphragms of varying size and in effect exposing the center of the cornea (where the most tissue removal is required) the most while allowing the periphery of the cornea to be exposed to less ultraviolet light. Astigmatismcan be corrected by adding an expanding slit to this arrangement, thus exposingone meridian of the cornea to more ultraviolet light than the opposing meridian, a feature found only on the VISX laser and not on the Summit. |
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