Ophthalmic Year Book Volume 17 (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1921 Excerpt: ...by severe choked discs. Lewis thinks the term "choked disc" should be reserved for cases of noninflammatory edema of the nerve head, and should not be applied to true neuritis where there is an active inflammation. The subjective ocular symptoms of choked disc vary greatly, and may be due to meningitis, syphilis, nasal accessory sinus disease and brain tumor. The latter may exist for a long time without causing any other symptom save papillitis. He cites an interesting case substantiating his theories. Cantonnet and Saint Martin report a case of unilateral papillary stasis from a foreign body in the orbit. There was an exophthalmos of the right eye from a shell wound of the orbit. Ophthalmoscopic examination showed a low grade choked disc on the internal inferior two-thirds of the disc. A foreign body was extracted, which was found to be a piece of shell. The contact with the nerve produced the stasis. There was also a purulent accumulation which produced the exophthalmos. The case was cured in a few weeks. Brazeau discusses papillitis and glioma of the brain. He remarks that there are two kinds of inflammation of the disc; the one inflammatory in type, the other being papillitis by stasis. Gliomas of the brain substance probably lead in frequency and malignancy in brain tumors. A periodic loss of vision probably means a brain tumor. The cause of edema of the disc is most probably interference with the return circulation. This is explained by the intercommunicability of the space between the brain membranes and those of the optic nerve. The prognosis, where the papillitis is due to pressure, is dependent on the cause, as is also the amenability to treatment. Schrader reports a case of double choked disc in cancer of the occipital bone. An injury r...