Laser-assisted In Situ Keratomileusis (LASIK ) is a form of refractive laser eye surgery performed by ophthalmologists intended to correct vision. The procedure is usually preferred over photorefractive keratectomy (PRK) as it requires less time for full recovery, and the patient experiences less pain overall.
Wavefront-guided LASIK is a form of LASIK surgery where, rather than apply a simple correction of focusing power to the cornea, an ophthalmologist applies a spatially varying correction, using a computer-controlled high-power UV laser guided by measurements from a wavefront sensor. The goal is to achieve a more optically perfect eye, though the final result still depends on the physician's success at predicting changes which occur during healing.