ICL implantation, also known as posterior chamber IOL implantation, is the implantation of an IOL, a collagen polymer with a thickness of only 50 microns, narrower than a hair, which is a concave lens of the appropriate prescription, into the human eye to correct high myopia, hyperopia and astigmatism, up to a maximum of 2000 degrees of myopia, 2000 degrees of farsightedness, and 400 degrees of astigmatism. As the most advanced treatment for myopia, ICL implantation makes up for the inaccessibility of excimer laser correction for myopia, hyperopia and astigmatism, and is considered to be the safest and most well-designed alternative to LASIK and other excimer surgery for myopia. The key to its superiority over excimer laser surgery is that it does not remove or destroy corneal tissue, does not alter the normal structure of the eye, and only implants a folded ICL lens through a 3mm minimally invasive tunnel incision that requires no sutures. The unique superiority of ICL implantation: ICL implantation is different from any previous myopia correction surgery in that it does not change the eye tissue structure, does not cut the cornea as a cost, the surgery is as reversible as wearing contact lenses, the visual quality after surgery is far better than excimer laser surgery, and ICL implantation does not affect the patient’s ability to receive other eye treatments. ICL implantation is fast, does not require hospitalization, and is particularly effective for patients with high myopia (600 degrees or more), super high myopia (1000 degrees or more), and farsightedness. It can correct a wide range of myopia, hyperopia and astigmatism. 1.What kind of patients are suitable for ICL implantation? Patients between the ages of 20 and 50, with 300 to 2000D of farsightedness, 300 to 2000 of myopia, and 100 to 400 degrees of correctable astigmatism, should undergo a detailed preoperative examination to rule out serious ophthalmic disorders such as glaucoma, iritis, and retinopathy. The ICL procedure is the same as the LASIK preoperative examination, except that ICL implantation requires additional special examinations such as corneal endothelial function examination and anterior chamber depth, which takes about 2 hours. 2. Appointment for surgery: After the examination, if the patient is eligible for surgery, the doctor needs to input the refractive error, anterior chamber depth, corneal curvature, corneal diameter and other data into the computer software for calculating the crystal degree, and through precise calculation, the patient will be implanted with the type of crystal, and formally order the patient-specific ICL lens from the Swiss manufacturer by fax, etc. After the ICL arrives in about a week to three weeks, an appointment can be made. The surgery is scheduled. Before the surgery, the patient will be given a YAG laser to perform iridotomy to prevent the patient’s eye pressure from rising after the surgery. 3. Surgery: The procedure is not complicated, but safety is very important and must be performed by a physician who is skilled in microsurgery and has extensive surgical experience. During the surgery, through a minimally invasive incision at the edge of the cornea, a foldable and shrinkable ICL lens is implanted into the eye through a special pusher and fixed in the ciliary sulcus behind the pupil. The surgery takes only about 10 minutes for a single eye, and the patient does not suffer any pain during the surgery, and only a few patients may experience slight eye swelling during the surgery. 4.Post-operative review: The review date is roughly 1 day, 1 week, 1 month, 3 months, 6 months and 1 year after surgery. After surgery, you need to order eye drops to prevent infection and promote recovery for one to four weeks. The above is the whole treatment process of ICL implantation.