Both procedures use the excimer laser to reshape the cornea; the difference lies in the initial stage of the procedure. In PRK, the outer surface of the cornea is removed with a solution and the laser treatment is then applied. In LASIK, a thin flap is created on the surface of the cornea, the flap is lifted, and then the laser treatment is applied. In general, LASIK provides quicker and less painful visual recovery. PRK involves less risk and is more appropriate for individuals with certain corneal conditions or occupations. In the long run, either procedure will give you the same result of clearer vision.

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