title: Perforating corneal transplantation: difficulties and possibilities.
mesh_terms: D003318:Corneal Opacity / Q000601:surgery; D016039:Corneal Transplantation; D006801:Humans; D007634:Keratitis / Q000601:surgery; D007640:Keratoconus / Q000601:surgery; D011183:Postoperative Complications; D014184:Transplantation, Homologous