Femtosecond laser gives a better choice, which initially serves the U.S. military, through a large number of evaluation tests, in 2007 to obtain the authoritative certification of NASA, is currently the only approved application of myopia surgery equipment for astronauts. It is understood that in the United States, military personnel, pilots, the Navy, snipers are using femtosecond laser technology to improve vision, in order to better accomplish the mission.
Not only that, femtosecond laser also according to individual differences in the flexible setting of surgical parameters, such as corneal flap thickness, diameter, etc. can be customized, and "the whole process of knife" flap boundary is more aligned and safer, faster nerve repair. As a result, the surface of the corneal flap in each eye is smooth, even and perfect, almost close to the original state of the cornea, as can be seen in the slit-lamp examination after surgery.