Prior to surgery, the corneal map is measured, to identify the bulging areas on the corneal surface. Based on these characteristics, the machine calculates and offers an appropriate treatment program for each patient to smooth the corneal surface and return it to a spherical property that helps light to converge at a point, making reduce smudging, shadows ... The procedure is quick, about 15 minutes, of which laser projection time is less than 60 seconds for each eye.