Calcium deposition in a corneal graft.

Corneal calcification can be broken down into two distinctly different types: calcific band keratopathy and calcareous corneal degeneration. Both have been described in patients with ocular inflammatory disorders, with elevated serum calcium, or following ocular surgical procedures. This is the first case report of corneal calcification in a donor corneal button following penetrating keratoplasty, and it closely resembled calcareous corneal degeneration.