Surgeon The experience of the surgeon is decisive for the safety of the procedure. Operating a corneal lamellar microdissection is complex and therefore requires a highly skilled ophthalmologist. Experienced surgeons are also able to handle the complexities of individual differences during the procedure to ensure the safety of each patient. This is difficult for inexperienced surgeons to do. Surgical Equipment The difference in the performance of the equipment directly determines the quality of the surgery. This is reflected in the precision of the surgical correction and the smoothness of the postoperative cornea, as well as the area to be cut and the thickness of the remaining cornea. Precise cutting can prevent failure to achieve predicted visual acuity or overcorrection into hyperopia; smooth corneas mean no irregular astigmatism; larger surgical areas mean no nighttime glare; and large remaining corneal thickness means no medically induced cone corneas. Operating Room The air conditions in the operating room directly affect the stability of the device and the safety of the procedure. Excimer devices are very sensitive and unstable advanced precision instruments that require a constant temperature, humidity and pressure environment, which only a laminar flow ultra-clean operating room can provide. And only an ultra-clean operating room can prevent exogenous infections during surgery. Surgical services All patients undergoing LASIK surgery will inevitably produce nervousness, meticulous and caring services can ease or even eliminate the patient’s nervousness; poor service attitude will intensify the patient’s nervousness, so that the patient’s anxiety increases, fear rises, in the operation can not cooperate well with the doctor, which may produce some unexpected symptoms, seriously affecting the surgical results.