[Primary isolated amyloidosis--a rare corneal degeneration].

Report on a 47-year-old woman patient in whom an eccentric tumorlike corneal change was found in the left eye. Only after penetrating keratoplasty was the exact diagnosis--a primary isolated corneal amyloidosis--established, by light microscopic examination. The graft remained clear. Familial and systemic amyloidosis were ruled out by further examinations. The prognosis is favorable.