title: Clinical indications for penetrating keratoplasty: an update.
authors: J I
authors: JI
authors: McNeill
authors: T D
authors: TD
authors: Lindquist
mesh_terms: D003316:Corneal Diseases / Q000175:diagnosis* / Q000601:surgery; D005125:Eye Banks; D006801:Humans; D015948:Keratoplasty, Penetrating