The present study is a report on the morphological, particularly ultrastructural findings in the newly formed epidermis of varicose ulcerations after a series of irradiations with a low energy He-Ne laser. The ultrastructural alterations are interpreted as most probably conditioned by the biostimulating effect of the radiation and they are compared with the results obtained by other investigators studying these problems and with findings in the epithelium of embryonal epidermis as well as in the epidermis exposed to ultraviolet radiation.

Department of Dermatology and Venerology Medical Faculty Palacký University Olomouc Czechoslovakia