ICL lens implantation is the abbreviation of posterior chamber IOL implantation, which is the latest technology that can replace excimer laser surgery, laser optical keratomileusis and other cutting surgery for refractive correction. The procedure has the advantages of minimal surgical trauma and good reversibility, but also has the disadvantages of easily affecting intraocular pressure and being prone to infection. Patients should decide whether to undergo this surgery after full understanding and combined with the doctor’s recommendation. Advantages 1. Less traumatic surgery: no need to remove or destroy corneal tissue during surgery, no need for post-surgical suturing, simple and safe surgery, small incisions, and no change in the structure and shape of the eye tissue; 2. The ICL is implanted in the posterior chamber behind the iris and is fixed in the ciliary sulcus using a unique design, which basically does not touch the lens and cannot be seen from the outside, making it more aesthetically pleasing. Disadvantages 1, affect intraocular pressure: ICL implantation may occupy the intraocular space and affect the flow of atrial fluid, which may cause elevated intraocular pressure in some patients and even glaucoma; 2, prone to infection: due to intraoperative operations, postoperative healing, and medications, some patients may cause intraocular infection; 3, foreign body sensation: due to surgical operations and other issues, the implanted ICL may have some contact with its own lens, which may cause foreign body sensation. 3. Foreign body sensation: Due to the operation and other problems, ICL implantation may have some contact with the own lens, which may cause foreign body sensation and clouding of the own lens, resulting in cataract.