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What is PRK?<br><br>Photorefractive keratectomy (PRK), or u2018surface treatment,u2019 is a vision correction procedure, available in Hyderabad at Envison Lasik Centre, in which the vision correction treatment is applied to the surface of the cornea.<br><br>PRK was the first vision procedure performed using the Excimer laser, and is still widely practiced today. It remains the procedure of choice for patients whose corneas are too thin to have LASIK.
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