PRK

Photorefractive Keratectomy, also known as PRK, this was the first successful laser vision correction procedure to ablate, or remove, tissue directly from the eye’s surface to change the curvature of the cornea. In PRK, the epithelium is scraped off the surface of the eye. Then, a laser is applied to reshape the cornea. This procedure, also known as surface ablation, received FDA approval in 1995. Although PRK is still used, LASIK is the more popular laser vision correction procedure. PRK has made a comeback in recent years because of studies that indicate that PRK and LASIK have similar outcomes. Yet PRK has less risks of complication as no flap is created. Thus for patients with thinner corneas, PRK is safer. However, PRK has its drawbacks, including longer healing time and increased pain associated with the surgery.