Lasik is one of the most common excimer laser surgeries for myopic patients. ICL technology is another innovative technological achievement in the field of modern refractive surgery. ICL surgery, also known as IOL implantation, is fundamentally different from Lasik surgery. The principle of Lasik surgery is to create a lamellar flap with a tip on the corneal surface using an automated miniature corneal lamellar system, flip the flap, apply excimer laser computer-controlled multi-step zoning to cut within the corneal stroma, and finally reset the flap. This approach preserves the integrity of the corneal epithelium and anterior elastic layer. The principle of ICL surgery is to install an IOL in the anterior safety zone of the human lens, which is only about 50 microns thick, thinner than the diameter of a hair, and it is particularly effective in treating high myopia without removing or destroying corneal tissue and without sutures after surgery. By comparing the principles, it is easy to find that ICL technology is superior to Laisk laser surgery. 1. When ICL is used to correct myopia, the size of the patient’s pupil is not particularly important, and there is no need for the cornea to have a large thickness. Because ICL does not cause permanent structural damage to the cornea when correcting myopia, patients can have the lens removed if they are not satisfied with the post-operative results – something that is not possible with LASIK surgery. 2. ICL provides greater stability and better quality of vision, even for those with higher degrees of correction. 3. With 23% of patients requiring augmentation surgery after Lasik and only 4.3% of patients requiring augmentation surgery after ICL, ICL offers an excellent alternative to laser surgery for patients with moderate to high myopia.