and astigmatism. Various techniques, including Small Incision Lenticule Extraction (SMILE), Laser-Assisted In Situ Keratomileusis (LASIK), and Trans-Photorefractive Keratectomy (Trans-PRK), are ...

The VISX STAR S4 laser is FDA approved for treatment of nearsightedness, farsightedness and astigmatism. This laser uses a scanning delivery system that ... Compared to standard LASIK and PRK, ...