[Corneal dysplasia].

Corneal dysplasia has been recently reported. Clinically, it is characterized by a progressive epithelial corneal opacity with pearly or greyish white coloration. Its topography may be either next to either far from the limbus. The recurrences are frequent after surgical treatment. Histologically, many aspects are described. Morphological changes affecting the cells and/or the architecture of the modified epithelium, may vary from light dysplasia to true carcinoma in situ. Some peculiar clinical conditions may coexist with corneal dysplasia, which may also be isolated. Three clinical cases are reported, with detailed pathological data. The signification of the use of the term "dysplasia" and the histogenesis are discussed, and the conclusions for treatment are drawn.