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Patent Pending Keratoprosthesis is a surgical procedure where a diseased cornea is replaced with an artificial cornea. Traditionally, keratoprosthesis has only been reserved for eyes that have already failed corneal transplantation or where the prognosis for a corneal transplant is extremely poor. More recently, a less invasive, non-penetrating artificial cornea has been developed which can be used in more routine cases of corneal blindness.