Femtosecond laser combined with excimer laser for myopia treatment is an epoch-making advancement in myopia treatment. It has unparalleled superiority. 1, femtosecond laser myopia surgery is a full blade-free surgery: femtosecond laser combined with excimer laser is all-laser surgery, no longer using mechanical corneal lamellar knife. 2, femtosecond laser myopia surgery using disposable package, greatly reducing the chance of cross-infection: each femtosecond laser package have series number, each femtosecond laser package series number can only be used for 1 person, greatly reducing the chance of cross-infection. It will never be used repeatedly like a lamellar blade. 3, femtosecond laser myopia surgery flap thickness precision: femtosecond laser surgery cutting more accurate, precision is more than 100 times the traditional corneal knife, can cut a thinner corneal flap, error is small, error control within 10-15 microns, femtosecond laser myopia surgery postoperative safety is more secure; surgical source aberration reduction, femtosecond laser myopia surgery postoperative visual quality is significantly higher than the laminar knife excimer laser The post-operative visual quality of femtosecond laser myopia surgery is significantly higher than that of laminate excimer laser surgery, reducing irregular astigmatism caused by uneven flap cutting and improving post-operative night vision and glare; the recovery time and recovery effect of femtosecond laser myopia surgery is faster. 4, femtosecond laser myopia surgery produced by the corneal flap cutting thickness almost at the same depth, less damage to the nerve: after the surgery eye dryness symptoms significantly slowed. 5, femtosecond laser myopia surgery flap, better neutral (because the placement of the attraction ring can be fine-tuned again on the computer screen flap scanning position): less chance of damage to the corneal flap tip; quasi-molecular cutting creates good conditions, reducing the chance of off-center cutting, which in turn reduces the surgical source of astigmatism. 6, femtosecond laser myopia surgery of the femtosecond laser negative pressure ring pressure is small, surgical safety is higher: with da, Vinci femtosecond laser production of corneal flap used to attract the negative pressure of the ring (about 35mmHg) is significantly lower than the mechanical corneal lamellar knife production of corneal flap negative pressure (about 65mmHg), and negative pressure is completely controlled automatically by the computer, greatly improving the safety of femtosecond laser myopia surgery. 7, femtosecond laser surgery after the corneal edge repair quickly, less foreign body feeling after surgery: femtosecond laser system corneal flap, the edge of the corneal flap is vertical cutting, conducive to rapid healing repair of the corneal flap. 8, Femtosecond laser myopia surgery after external forces lead to a reduction in the chance of flap displacement: Femtosecond laser flap, corneal flap repair than the laminate knife more solid. 9, Femtosecond laser myopia surgery epithelial implantation less chance (because the flap making does not require the blade to enter the corneal interlayer, so will not bring the corneal epithelium into the corneal interlayer): epithelial implantation in the corneal interlayer is more troublesome complications, seriously affect vision. 10. Femtosecond laser myopia surgery is more widely indicated: patients who cannot undergo traditional surgery because their myopia is too deep and their cornea is too thin can choose femtosecond laser myopia surgery. 11. Femtosecond laser myopia surgery is safer: it eliminates the intraoperative risk caused by the use of a corneal knife and greatly reduces the possibility of serious complications that threaten postoperative vision.