Femtosecond laser is a laser that emits in pulses of only a few femtoseconds (1 femtosecond = 1/1000 trillion seconds), which is the shortest pulse available to man under experimental conditions. Femtosecond lasers are used in ophthalmic surgery and have been hailed as “another revolution in refractive surgery” after wavefront aberration technology. Most femtosecond laser procedures are performed in place of a corneal lamellar knife to create the corneal flap, which is a critical step in laser myopia surgery. To complete the myopia surgery, an excimer laser is also required to cut the myopic refraction. Femtosecond laser surgery completes the transformation of laser myopia surgery from knife to knife free, entering a new era of myopia surgery. The first thing you need to do is to get a good idea of what you want to do. Femtosecond laser myopia surgery is a laser to achieve photodynamic blasting of corneal tissue, in less than 30 seconds of the production of corneal flap process without serious damage to corneal tissue. Serious corneal flap complications are avoided, making it truly safe and injury-free. 2. Uniform flap making facilitates the improvement of visual quality after surgery. Femtosecond laser can precisely open the molecular chain of eye tissues, producing a more uniform and perfect corneal flap, allowing myopic patients to obtain a more perfect visual quality. 3. Embedded occlusion and stronger corneal flap after resetting. Femtosecond laser produced corneal flap and eye reset easily bite closely, will not be misaligned, and will not appear shattered flap, button flap and other complications. 4. Precise control of flap thickness, more accurate surgical design. Femtosecond laser can control the accuracy of corneal flap making within 10-15 microns, and the higher safety of femtosecond speaks for itself. 5. Disposable patient interface components eliminate medical-derived infections. Femtosecond laser blade-free surgery makes surgery on the human cornea completely goodbye to the lamellar knife, and the occurrence of cross-infection during the procedure becomes history.