Full femtosecond myopia surgery can be performed at 900 degrees, but there are some prerequisites for the surgery, such as age greater than 18 years old, myopia is basically stable, and so on. Full femtosecond myopia surgery, also known as full femtosecond laser corneal refractive surgery, can be used to treat astigmatism or myopia, and the refractive status of the patient’s eyes can be changed through femtosecond laser operation. After the surgery, you need to pay attention to protecting your eyes, avoiding strenuous exercise, and reviewing on time, the success rate of the surgery is usually higher. 900 degrees generally refers to 900 degrees of myopia, which belongs to high myopia and can be improved by this surgery. However, patients need to be at least 18 years old; their visual acuity has been relatively stable in the past two years, with no significant increase; their corneal thickness meets the requirements; and they do not have other eye diseases that will affect the surgery. If you want to have full femtosecond myopia surgery for 900-degree myopia, it is recommended that you go to a regular hospital to complete a systematic examination and under the guidance of a professional doctor.