Photorefractive Keratectomy is the first vision correction technique using an excimer laser. The first vision correction using PRK was carried out in Berlin in 1985. The technology of Photorefractive Keratectomy was a non-contact excimer laser effect on the surface layers of the cornea without affecting the internal structures of the eye.

Also, as in radial keratotomy, the cornea of the eye was exposed. But the application of notches was no longer required. The shape of the cornea changed under the influence of a laser, which evaporated the tissue from the surface. High accuracy made it possible to achieve good predictability of the result, a significant reduction in side effects. But for the patient, the period of recovery of the surface layer (2-4 days) remained unpleasant, while adaptation ended only after 3-4 weeks. Laser vision correction according to the PRK method was not performed immediately on both eyes.

To eliminate these points, the PRK correction was modified. Now, after laser exposure, a special protective lens is used, which made it possible to reduce the recovery period, it became possible to carry out correction on both eyes at once. Now this technique is used in ophthalmological clinics exclusively for medical reasons to achieve the best results in cases where correction by other methods is impossible.