The technology of laser eye surgery is very mature, with very few side effects and risks, but there are still some complications, the main complications are the following: first, dry eye, a very small number of people reported that after surgery will appear dry eyes, need to use artificial tears to replace the treatment, generally can relieve the symptoms; second, the degree of regression, may occur after the surgery a few years, decades or The third type is the corneal scar caused by infection, which can lead to more serious irregular astigmatism, but the chance of occurrence is much smaller, as long as you pay attention to the prevention of infection and hygiene after the surgery, the corneal scar will not occur.