Treatments of vision disorders such as myopia, hypermetropia and astigmatism with excimer laser have been widely known in medicine. Millions of patients have been treated with this method since 1980s. In laser treatments, no tissue removal is made in the eye. Cornea is re-shaped by ablation which is a method of vaporization.
LASIK method consists of making a small opening a flap on the upper surface of cornea and adjusting the vision ability with excimer laser.