Intraocular Lens Implantation (IOL) is a surgical procedure that involves replacing the natural lens of the eye with an artificial one. It is often used to treat cataracts, a condition where the lens becomes cloudy and obstructs vision. There are several synonyms for IOL implantation, including cataract surgery, phacoemulsification, lens replacement surgery, and artificial lens implantation. These terms all describe the same procedure aimed at improving vision and restoring clarity to the eye. It is a safe and effective treatment that has helped millions of people worldwide to regain their sight and maintain an active lifestyle.