In general, a patient’s cornea must be at least 480µm thick to undergo full femtosecond surgery, and the exact availability of the surgery depends on the patient’s condition. Full femtosecond surgery, also known as full femtosecond laser corneal refractive surgery or femtosecond laser corneal stromal lensectomy, is a type of laser myopia correction, which corrects vision by changing the refractive state. Patients must have a corneal thickness of at least 480µm in order to undergo full femtosecond surgery, but full femtosecond surgery not only requires corneal thickness, but also has more stringent requirements for the amount of myopia in the eye. Patients must be over 18 years old and have stabilized myopia before they can undergo full femtosecond surgery. Meanwhile, people with corneal vascular opacities or a history of trauma are not suitable for full femtosecond surgery. Those with unqualified corneal thickness are also not eligible for the surgery. After the surgery, patients need to take medication as prescribed by the doctor, pay attention to eye hygiene, and avoid rubbing the eyeballs with force. It is recommended that patients after full femtosecond surgery follow the doctor’s instructions for care, regular checkups, and timely consultation when discomfort occurs.