PRK: Photo Refractive Keratectomy; stands for the initials of the method based on tearing off the corneal epithelium to reshape the cornea.
No flap formation is performed in Prk method.
The superficial epithelium layer of the cornea is peeled off; refractive error treatment, i.e. eyeglass power correction, is performed, and protective contact lens is placed in the Prk method.
Following Prk treatment, pain in the first day, and watering and stinging for a few days may be observed.
The contact lens is removed on day 3 or 4 based on the recovery period of the corneal epithelium.
Visual clearness is obtained in 1 week following Prk.Visual acuity is ensured after 3 months during which patients may go on their daily lives.
PRK method is applicable for patients with refracrive errors up to 2,5 - 3 diopters whose corneal thickness is below 500 microns.In other words, its use is restricted.
Lasek method is applicable for patients with refractive errors above 3 diopters whose cornea is thin and not eligible for femtolasik.
Although PRK method, like the Lasek method, involves a painful and longer recovery period, it is a safe method.
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