NuLens Ltd. Accommodative Intraocular lens eye implant. This technique allows posterior fixation of intraocular lens implants in the absence of capsular support. In most surgeries, an intraocular lens is inserted. This lens is called an intraocular lens or IOL. In 2006, Pat Summerall underwent cataract surgery, and had an intraocular lens implanted. In later life Ridley himself underwent successful bilateral intraocular lens implantation at St Thomas's. An artificial intraocular lens (IOL) is implanted in its place. The multifocal intraocular lens is one of the newest types of such lenses. Examples include the intraocular lens, intrastromal corneal ring segment, cochlear implant, tympanostomy tube, and neurostimulator.