Histopathology of long-term Cardona keratoprosthesis: a case report.

PURPOSE: To report histologic findings of a Cardona keratoprosthesis (KPro) in an eye enucleated after 14 years.

METHODS

Case report of a 56-year-old male whose KPro was implanted following bilateral chemical burns. Following enucleation, histopathology by light and transmission electron microscopy was performed.

RESULTS

The prosthesis was retained in the eye until clinical complications including retinal detachment necessitated enucleation after 14 years. Histopathology confirmed a total retinal detachment, necrosis of the detached retina, inflammation, and foreign-body reaction in the Dacron mesh. Calcification was not seen.

CONCLUSION

PMMA is a suitable material for an optic and provides for good postoperative acuity. The complex skirt area may be predisposed to long-term inflammation. Less complicated surgery and a simple inert device with a flange with good mechanical and biologic integration may help in reducing postoperative complications.