Eye, Ear, Nose and Throat (Volume 1907) (Paperback)

Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: produced in nearly every case growth which was histo- logically identical with chalazia in man. Only rarely could the bacillus be again obtained from the experimentally produced chalazia, although in one case he was able to carry the process through a third generation. He concludes as follows: 1. Chalazion represents, etiologically considered, an infectious bacterial process. 2. The bacilli found constantly and alone in considerable quantity in incipient chalazia, are identical in all their properties with that group of "Coryne" bacteria which Kuschbert-Neisser and Leber have cultivated, and which are called "xerosis bacilli." 3. The so-called xerosis bacilli, which are present in the normal conjunctiva, and especially in its various pathologic conditions, probably penetrate the conjunctiva through rubbing of the eye, and on growing there, produce an acute inflammatory process, which changes into a growth composed of chronic granulation tissue. 4. Various catarrhal affections of the conjunctiva and asthenopia in its different forms predispose to these xerosis bacillus affections. 5. In opposition to Baumgarten's opinion of the absolute a-virulence of the xerosis bacilli, experimental chalazia may be produced in rabbits by the injection of xerosis bacilli, obtained not only from human chalazia but from a variety of other pathologic processes. Consequently chalazion is not a retention cyst produced by occlusion of the duct of the Meibomian glands, and the tumor lias none of the characteristics of, nor connection with, tuberculosis. THE EYELIDS. Terson1 states that palpelral horns are more frequent in women, and usually occur after forty years of age. The horns are of variable size, the longest one noted being four centimeters in length, as reported by Shaw. Of the five cases s...