Abstract: subtractive surgery, as its name implies, mainly uses the method of reducing eye tissue to achieve the purpose of correction. Excimer laser, which is recognized by ordinary people, is a representative of subtractive surgery.
according to the operation mode, myopia correction surgery can be divided into addition correction surgery and subtraction correction surgery. As the name suggests: additive correction surgery is to add crystals to the eyes to improve vision and restore vision to normal state; The corresponding subtractive surgery is to correct vision by cutting the cornea with laser.
I. additive correction surgery:
ICL is the representative of additive correction surgery. The full English name of ICL is implantable contact lens (implantable contact lens). ICL is a safe and high-end myopia correction scheme at present. Different from laser and other corneal cutting operations, ICL does not cut the cornea. The lens is implanted into the eye through minimally invasive surgery, which has no damage to the cornea. Clearer vision after correction is a new trend of myopia correction technology. This correction technology has been carried out in more than 60 countries around the world, and one ICL is implanted every 6 minutes.
II. Subtractive correction surgery:
subtractive correction surgery, as the name suggests, mainly uses the method of reducing eye tissue to achieve the purpose of correction. Excimer laser, which is recognized by ordinary people, is a representative of subtractive surgery.
excimer laser is a kind of surgical correction method that changes the radian of cornea through laser to improve vision. A corneal flap needs to be made during the operation. The corneal flap uses a special and extremely precise micro corneal lamellar cutting system (referred to as corneal knife) to make the corneal surface tissue into a pedicled circular corneal flap. After turning the corneal flap, the operation is carried out. After the operation, the corneal flap is reset to achieve the purpose of correcting myopia.