Half femtosecond procedure time

The principle of semi-femtosecond laser surgery is to create a lamellar corneal flap with femtosecond laser, and apply excimer laser to cut the corneal stroma under the corneal flap, so as to correct myopia and astigmatism. This surgery has high safety, accuracy and predictability, and the operation time is only about ten minutes. The indications of semi-femtosecond laser surgery are over 18 years old, and the refractive power is stable in the past two years. The development rate is no more than 50 degrees per year. The range of refractive power correction: myopia less than or equal to 1200 degrees, astigmatism less than or equal to 600 degrees. Those who wear contact lenses should stop wearing soft lenses for more than one week and hard lenses for more than three weeks. There are no other diseases or contraindications in the eyes.