Title: Graft Survival After Penetrating Keratoplasty
Abstract: Corneal transplantation has evolved toward selective tissue transplantation over the last decade, with many corneal diseases being treated by a variety of anterior and posterior lamellar graft procedures. Surgeons have adopted these new techniques rapidly because of distinct advantages over penetrating keratoplasty (PK).1 Simultaneously, the quest for a tissue-engineered corneal substitute has made rapid progress, and implantation of corneal substitutes may become the future of corneal surgery.2 Despite the exciting progress in corneal surgery, PK remains the most common form of corneal transplantation in the world at present, and although PK may diminish in importance in the future, it will remain the default or procedure of choice for some eyes.