Salzmann's nodular degeneration of the cornea

American Journal of Ophthalmology
A VannasI Wood


Eleven corneal specimens from nine patients with Salzmann's nodular degeneration of the cornea, together with all available clinical information, were collected for this study. The specimens were examined by light and electron microscopy. An antecedent keratitis was diagnosed by history and microscopic findings in every case. The corneal epithelium showed degenerative changes, its thickness varied, and in nodular areas it often consisted of only a single layer of flattened epithelial cells by light microscopy. Bowman's membrane was missing over the nodules, and in this zone there was excessive secretion of a basement membrane-like material. Hyaline degeneration of collagen, cellular debris, and electron-dense hyaline deposits were seen in the collagen of the nodules. The number of fibrocytes in the nodules varied from many that were active to a few that were degenerating. External irritation because of poor epithelial protection was interpreted as a causative factor, although other tissue repair mechanisms may also have played a role.


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Related Concepts

Salzmann's Nodular Dystrophy
Abnormal Degeneration
Squamous Transitional Epithelial Cell Count
Collagen Diseases
Structure of Corneal Epithelium
Corneal Dystrophy, Lattice Type 3
Process of Secretion

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