What kind of laser surgery is good?

There are many surgical methods to correct myopia. At present, all-femtosecond laser, half-femtosecond laser or excimer laser corneal refractive surgery is widely used. The principle of this surgery is to use femtosecond laser or excimer laser to cut the central optic area of cornea, thus changing the corneal shape and curvature to correct myopia. This kind of surgery has high safety, accuracy and predictability. All-femtosecond surgery has small incision, no corneal flap, small trauma, but high surgical cost; Excimer laser surgery, low operating costs, but corneal incision large, need to do corneal flap, easy to carry out individualized cutting.