A Histologic Study of Calcific and Noncalcific Band Keratopathies.

摘要

One hundred five cases previously diagnosed as band keratopathy were reexamined. We found that band keratopathy was calcific, noncalcific, or a mixture of both. The noncalcific band was identified as elastotic degeneration of collagen, known clinically by various alternate terms. Cases of so-called reduplication of Bowman's membrane were reexamined, and many demonstrated production of a thick basement membrane of the corneal epithelium, with or without massive calcification. Identification of calcific-band keratopathy was made by transmission electron microscopy even when the tissue had been previously decalcified. (Author)