It is a surgical procedure which involves replacing diseased cornea with an artificial cornea. This surgery helps in restoration of vision, suffering from damaged cornea. Keratoprosthesis involves usage of artificial cornea instead of a new one. 

They are made up of clear plastic. They have excellent tissue tolerance and optical properties. They come in various design, size and even the implantation techniques.  This is performed by ophthalmologist.

Types; Boston keratoprosthesis Osteo-Odonto-Keratoprosthesis (OOKP) AlphaCor KeraKlear Artificial Cornea