Cataract surgery-IOL implantation: For cataract surgery and intraocular lens implantation, Hydroxypropyl Methylcellulose gel should be carefully injected into the anterior chamber prior to capsulotomy using standard aseptic techniques and only the cannula provided with the product. Gel may be injected into the chamber prior to or following removal of the crystalline lens. Hydroxypropyl Methylcellulose gel may also be used to coat an intraocular lens prior to implantation as well as the tips of surgical instruments. Additional gel may be injected during anterior segment surgery to fully maintain the chamber or replace any volume lost during the surgical procedure.