PTK is a laser procedure developed in the 1990’s to treat corneal dystrophies affecting the surface of the cornea. The procedure is performed with an excimer laser, and the laser beam is used to removed the diseased tissue on the surface of the cornea. The excimer laser is the same laser used for LASIK and PRK, two elective procedures that improve distance vision. Unfortunately, the PTK procedure does not accomplish the same goals as LASIK and PRK, and patients with corneal dystrophy are not candidates for LASIK or PRK.
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