Surface Excimer Laser Treatment (PRK)
When the surface of the cornea is treated directly with the laser, the term “photorefractive keratectomy” or PRK is used. In the last three years this surface surgery has been refined to allow for faster recovery of vision and less discomfort during the healing period. In these refined variants, the surface layer of the cornea is separated off either pharmacologically (called LASEK) or with a non-pharmacologic mechanical separator (termed Epi-LASIK). These surface treatments are generally recommended for patients with thinner corneas or who are vulnerable to eye injuries, for example athletes in contact sports such as football or boxing.