Posterior chamber IOL implantation is the ideal new treatment for high myopia. The principle of ICL surgery is to implant a new refractive interpositon in your eye, which is equivalent to implanting your myopic glasses into your eye after shrinking them, without bringing any change to the optical quality of the original refractive interpositon in your eye, and the optical quality of ICL is fully guaranteed. It not only has the advantages of good predictability, exact efficacy and good postoperative visual quality, but also has the advantages of reversibility, can be removed again after surgery if necessary, less painful surgery, fast recovery of vision after surgery, less complications and no need for special medication. It also avoids the disadvantages of excimer laser corneal cutting and surgery limited by corneal thickness.