Full femtosecond, also known as full femtosecond laser surgery, is a procedure where only a small incision is made in the cornea, without the need for a flap, and the incision heals quickly after surgery. While the semi-femtosecond laser surgery needs to cut off the corneal flap, usually a week to be able to heal, will not be permanently unable to heal. Femtosecond laser surgery can be divided into full-femtosecond laser surgery and half-femtosecond laser surgery, full-femtosecond laser surgery is through the cornea stroma layer cut out a lens, and then through a 3 ~ 4 mm micro-incision will be taken out of the lens can be, the whole process does not need to make a corneal flap, so there will not be a flap does not heal the situation. Semi-femtosecond laser surgery is to make a corneal flap on the cornea through the femtosecond laser, then lift up the flap, then cut the corneal stroma, and finally reset the flap of the cornea surgery, semi-femtosecond laser surgery to make a flap of the cornea will take about a week to heal. If femtosecond laser surgery is needed, please follow your doctor’s instructions for treatment.