Epithelial downgrowth leading to graft rejection after penetrating keratoplasty.

Purpose: To report a case of epithelial downgrowth after penetrating keratoplasty.

Case Description: A 58-year-old man presented with graft rejection in his three-month-old, repeat penetrating keratoplasty. Examination revealed centripetal opacification of the posterior cornea due to deep epithelization.