At present, most brands of femtosecond laser system play an important role in corneal refractive surgery, only to replace the corneal scalpel to make corneal flap. After the corneal flap is made, excimer laser should be used to ablate the thickness of part of corneal stroma layer and reduce the corneal curvature (radian), so as to achieve the purpose of myopia correction. However, Carl Zeiss's "visumax" system, which uses femtosecond laser to complete the process of making corneal flap and reducing corneal curvature (radian), makes the corneal refractive laser surgery farewell to excimer laser for the first time.
