PRK (photorefractive keratectomy)/epi-LASIK
PRK and epi-LASIK are surface ablation procedures to treat mild to moderate degrees of nearsightedness, farsightedness and astigmatism.
In surface ablation, the very top layer of the cornea (epithelium) is removed with a blade or alcohol (PRK) or with a machine that separates the top layer from the body of the cornea (epi-LASIK). The excimer laser is then used to reshape the front of the cornea. The VISX CustomView platform uses advanced technology to obtain an extremely accurate wavefront analysis of the exact amount of nearsightedness, farsightedness or astigmatism, which is then programmed into the excimer laser to create a precise laser treatment. Iris registration and eye tracking can be used to optimize the refractive results. While commonly used, CustomView is “off-label” for surface ablation. Iris registration and eye tracking can be used to optimize the refractive results. PRK and epi-LASIK are performed using topical anesthesia in the Wills Laser Center.