The process of femtosecond surgery, including before, during and after surgery. 1. Before surgery: generally need to examine the eye, need to drop antibiotics every day for 3 days before surgery, and then go to the operating room according to the appointment time. After entering the operating room, the nurse may order anesthesia for the patient, which may be done once in 5 minutes, or 3 times in a row. After the anesthesia is ordered, the patient will be scrubbed around the eyes with an antiseptic solution and then rinsed with saline before being sent to the operating table. 2. During surgery: some hospitals will sterilize the eyes before the operating table, and some hospitals also need to use povidone-iodine-containing solution to rinse the eyes again after going to the operating table, and then carry out myopic laser surgery. The operation time is relatively short, and the surgeon needs to look at the markers throughout the operation to perform the operation. Sometimes, the negative pressure ring will be used to suction the eyes to avoid the uncooperative patients from turning their eyeballs. 3. After surgery: The doctor may put bandage corneal contact lens on some patients, then squeeze eye ointment on them, and finally put on a transparent eye mask, which means that the surgery is finished. Femtosecond surgery is a common laser surgery treatment in ophthalmology, which is relatively safe, but also has certain risks, and specific treatment should go to authoritative medical institutions.