Textbook of ophthalmology in the form of clinical lectures Volume 3

by Paul Römer

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1913 edition. ...fluid that excite inflammation. Cases have been observed in which the choked disc disappeared in a remarkably short time after trephining of the skull, or open-, ing of the dura. In such cases the products that excite inflammation must still be able to come in contact with the optic nerve, and E. v. Hippel considers it 'inconceivable that a severe inflammation caused by toxines should recover rapidly when the same toxines--diminished only in quantity--still continue to act on the optic nerve." We come now to the reasons which either do not oppose or favor the theory that the increase of the intracranial pressure may be the single factor in the production of a choked disc. They are three in number. First, it has been shown that we can draw no conclusions from the presence or absence of hydrops of the intervaginal space as to the presence or absence of an increased intracranial pressure. Second, no unobjectionable evidence has yet been adduced, according to r. Hippel, that a choked disc occurs in connection with an intracranial neoplasm without an increase of pressure. Third, there is no parallelism between the size of the tumor and the increase of pressure. The intracranial pressure may be greatly increased by a small tumor. In spite of all this the theory is not yet accepted that the increased intracranial pressure is the sole cause of choked disc, in accordance with the view of SchmidtKimplcr. The main reason for this is that no pathological condition, which may he considered the imprint caused by the pressure, has yet been found to be constant. Even r. Hippel admits that there is no doubt that the Schmidt-Manz theory is not applicable to all cases. An experiment performed by Schieck to explain the pathogenesis of choked disc is...

184 pages, Paperback

Published September 13, 2013