Myopia of 700 degrees belongs to high myopia, which can be treated surgically, including excimer laser surgery, femtosecond laser surgery or intraocular refractive surgery, but these surgeries have clear indications, and must be examined clearly at the hospital after having indications for surgery before considering surgical correction. First, the age must be more than 18 years old and the myopia must be stable for more than two years; second, there must be no active inflammation, such as conjunctivitis, keratitis, mydriasis, dacryocystitis, these diseases can lead to the risk of infection after surgery, so surgery is prohibited; third, there are also requirements for the cornea, including the thickness of the cornea, corneal curvature, pupil diameter, so we must go through a detailed examination before Therefore, a detailed examination is necessary before deciding whether surgery is possible.