Fyodorov–Zuev Keratoprosthesis

Fyodorov–Zuev keratoprosthesis is one of the oldest designs for the artificial cornea. This implant was developed in Russia and it is widely used in Russia and China but not well known to the rest of the world. The implant consists of a titanium plate which is embedded within the corneal stroma and an optical cylinder which is in contact with the aqueous humor in one end and tear film in the other end. The surgery can be performed either in a single stage or in two separate stages separated by 3 months. The implant is generally offered to patients with history of multiple failed corneal transplants. Over 90 % of patients experience an improvement in vision. Graft retention is over 70 % for patients undergoing Fyodorov–Zuev keratoprosthesis. The complications include aqueous leak, granulation tissue overgrowth, uveitis, endophthalmitis, and glaucoma.