After laser corneal refractive surgery, patients may experience complications such as overcorrection or undercorrection of laser surgery, postoperative corneal endothelial cell loss and dry eye. If the malfunction or error of the checking instrument before surgery leads to inaccurate control of the amount of surgery, in this case, there may be overcorrection or undercorrection of myopia after surgery, which may lead to unsatisfactory correction of the patient’s visual acuity. If the number of corneal endothelial cells is neglected before surgery, and the number of endothelial cells is low, it may lead to the loss of corneal endothelial cells after surgery, and some people may have dry eyes due to inflammation and other reasons, such as dry eyes, foreign body sensation and other dry eye manifestations. If the corneal thickness of the patient does not meet the surgical criteria, the patient may also experience complications such as cone cornea. Although there is a certain possibility that the above scenarios may occur, due to the fact that the current research on corneal refractive surgery has become more mature and the strict control of surgical qualifications and procedures, the likelihood of the above risks is low. It is recommended that myopic patients seek prompt medical attention to assess their condition and choose the appropriate treatment under the guidance of their doctors to minimize the risk of surgery.