There are various methods to correct myopia, and corneal refractive surgery has been accepted by most patients, but for highly myopic patients and patients with thin corneas or corneal abnormalities, choosing corneal refractive surgery is riskier. With the development of posterior chamber IOL (ICL/TICL) implantation, it not only effectively avoids corneal-related complications, but also expands the scope of refractive surgery and shows obvious superiority in the treatment of high myopia. I. Surgery Introduction ICL (Implantable Contact Lens) or TICL (Toric Implantable Contact Lens) is the abbreviation of “Implantable IOL”, which can correct astigmatism. ICL/TICL is one of the most advanced and safest products for myopia correction in the world, and is now widely used at home and abroad. The lens is manufactured in Switzerland by STAAR Surgical and uses the patented material Collamer, which is close to the natural lens of the human body and has excellent biocompatibility, and can be permanently implanted in the human eye without maintenance for a lifetime. II. Surgical features ICL/TICL implantation is a simple and painless procedure, featuring: 1. short surgery time, only 15 minutes; 2. only a surface anesthetic eye solution is needed, the whole procedure is painless; 3. small surgical incision, no suture is needed; 4. the lens can be removed or replaced according to the patient’s needs after implantation, the surgery is reversible; 5. the surgery does not cut the cornea, avoiding corneal complications and postoperative dry eye; 6.The IOL is fixed in the ciliary sulcus and located in the posterior chamber space, with a stable position and high safety; 7.The postoperative vision recovery is fast, and the high-definition visual effect can be obtained on the second day, even exceeding the predicted effect before surgery. 8.The surgery can correct a wide range of myopia from 200 degrees to 2000 degrees and astigmatism from 100 degrees to 500 degrees. Indications 1. Myopia from 200 to 2000 degrees, astigmatism from 100 to 500 degrees. 2, between the ages of 18 and 50; 3, preoperative anterior chamber depth ≥ 2.8mm, anterior chamber angle open; corneal endothelial cell count > 2000/mm2; 4, no glaucoma, cataract, uveitis, fundus disease and other eye diseases and eye trauma history, no diabetes, hyperthyroidism, systemic immune diseases and other medical history; 5, thin cornea or dry eye patients, not suitable for LASIK surgery patients. 4, the process of medical treatment 1, the examination needs two days to complete, please arrange sufficient time to come to the center, if you wear corneal contact lens, please stop wearing 1 week, RGP, please stop wearing 1 month. 2.Checkup items include: binocular vision, intraocular pressure, corneal topography, dilated pupil examination, corneal thickness measurement, slit lamp examination, fundus examination, UBM examination, corneal endothelial lens examination, A ultrasound examination, IOL Master examination, and small pupil refractive examination. 3. After all the examinations, the doctor will determine whether you are suitable for ICL surgery based on your examination results and make an appointment to order a lens. The lens will be custom-made by STAAR Surgical in Switzerland, and the waiting period is about 1 week to 1 month. 4.After the surgery is confirmed, please undergo “bilateral iris laser perimetry” in the outpatient clinic in advance to avoid high postoperative pressure. We will notify you by phone after the crystal is in place, please come to the center one day before the surgery for pre-surgery preparation. V. Surgery procedure A painless surgery that takes only 15 minutes will change your life and bring you an unprecedented high-definition world! 2. First, the surgeon makes an incision less than 3.0mm in your cornea and injects a special gel to protect the intraocular tissues; 3. Then, the ICL/TICL is gently pushed into your eye with a special pusher and the IOL is positioned so that it is located in the ciliary sulcus behind the iris. 4. Finally, the gel is flushed out of the eye and the surgery is finished by applying antibiotic eye ointment. Post-operative precautions 1. You can use your eyes, work and study normally on the second day after surgery; 2. Please follow the doctor’s instruction to order eye solution for one week after surgery; 3. Please avoid dirty water entering your eyes within 1 week after surgery, and do not rub or squeeze your eyes; 4. Please do not swim, put on eye makeup or perform eye beauty treatment within 1 month after surgery; 5. Please come to the hospital for review 1 day, 1 week, 1 month, 3 months, 6 months, 1 year and 2 years after surgery. Seven, six advantages 1, safe. ICL does not remove and destroy corneal tissue, avoiding corneal complications and post-operative dry eye, fixed in the ciliary sulcus, stable position, long-term clinical evidence of safety and effectiveness. ICL can be permanently implanted in the eye and can be removed or replaced if the myopic patient needs other eye surgery. 3. High Definition. Let the eyes obtain excellent high-definition visual quality, and the post-operative vision can reach or even exceed the best corrected vision expected before surgery. 4. Rigorous. Detailed and professional preoperative examination and preparation, Swiss precision tailor-made crystal, international VISIAN ICL certified professional surgeons, to provide you with the most professional and accurate service. 5.Protection: ICL contains UV-blocking groups, which can prevent harmful UV rays from entering the eye, thus effectively curbing UV-induced related eye diseases. 6.Comfort: ICL lens material Collamer is a revolutionary high-tech material, which is biocompatible with human body and you can’t feel its presence at all after implantation.