Laser surgery for myopia, also known as keratomileusis, is a very routine procedure in ophthalmology today. Since the surgery is an invasive operation, regardless of whether the surgery is highly or minimally invasive, it may bring about rare risks or complications, which commonly include the following: 1. overcorrection and undercorrection; 2. refractive regression; 3. easy postoperative manifestations of dry eye; 4. optical phenomena such as halos and glare may occur after surgery, which usually last until about six months after surgery; 5. infectious keratitis; 6. corneal neovascularization or progressive dilatation of the cornea. These are the more common surgical risks or complications, but these complications are preventable and controllable, so they do not affect the surgical treatment of myopia.