PRKPRK is the abbreviated form of Photorefractive Keratectomy. PRK is the excimer laser procedure that is performed to people with thin corneae and not suitable for LASIK. It can be performed to all patients with myopia, hypermetropia and astigmatism and cannot have LASIK operation.
The procedure is without any flap creating on the cornea, instead mechanically removed preoperatively.The epithelial layer of the cornea consists of epithelial cells that be regenerated with differentiating from the stem cells around the cornea. Because of the removal of the epithelium patients experience pain in their eyes for 2-4 days until the the epithelium regenerates and heals.
Contact lenses are placed on corneae postoperatively to minimise pain and removed in 3-4 days. A clear vision is achieved in 3-4 weeks.
The patient wears shirt, bonnet and overshoes for the preparation. An anesthetical drop is dropped, eyes are sterilised with Batticone. After the procedure a biomicroscopical examination is made by the ophthalmologist. A protective glass is told the patient to wear and drops are prescribed.