Purpose: To compare the prevalence of endothelial rejection episodes and the probability of graft survival after initial and repeat penetrating keratoplasty (PK) in patients with keratoconus with and without atopy.
Methods: A retrospective review was conducted of all patients receiving PK for keratoconus at the University of Texas Southwestern Medical Center at Dallas from 1988 to 2009. Inclusion criteria involved those with both an International Classification of Diseases-9 code for keratoconus and a Current Procedural Terminology code for PK based on a computer database search.