Recurrence of macular corneal dystrophy on the graft 50 years after penetrating keratoplasty.

To report the recurrence of a macular corneal stromal dystrophy 50 years after penetrating keratoplasty (PKP). Observational case report A 76-year-old male patient presented with visual impairment in the right eye (OD) 50 years after PKP in 1962 (44 years after PKP also in the left eye (OS) in 1968) following explosion injury. His visual acuity had already been impaired before the trauma because of bilateral corneal opacities.