A manual and atlas of medical ophthalmoscopy / by W.R. Gowers.

Date:
1890
Catalogue details

Licence: Public Domain Mark

Credit: A manual and atlas of medical ophthalmoscopy / by W.R. Gowers. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    more intense than anteriorly, and are most intense near the stu'face of the nerve. This is seen especially in cases of meningitis, and affords evidence of extension of inflammation fi'om the meninges. An increase of nuclei is sometimes to be traced into the chiasma, and even into the optic tract (Fig. 32), where the corpuscles may even be aggregated into groups that have been termed miliary abscesses (Fig. 33). ■ During the progressive subsidence to atrophy, there is a diminution of the cellular elements in the papilla, probably, in part, in consequence of their transformation into fibres. The products of the degeneration of the nerve fibres are slowly removed. Ultimately the substance of the papilla appears to consist of a felty mass of interlacing fibres sprinkled with nuclei, iu which at last scarcely any indica- tion of nerve fibres is to be traced. Symptoms.—Subjective symptoms may be entirely absent, Fig. 31.—Longitudinal Section of the Optic Neeve, from a Case of Optic Neuritis, Showing the irregular outline of the degenerating nerve fibres, and the infiltration of leucocytes between the fasciculi, (x 120.) Fig. 32.—Longitudinal Section iHKOUGH the Optic Tract, in a Ca.se of Optic Neuritis. There is increase in the connective tissue corpuscles between tlie Kbres ( x 150.) Fig. 33.—Section thkougu tiik Optic Tract in a Case of Chisonic Meningitis. Shows aggregation of leucocytes into a miliary abscess, such as is seen in the medulla in cases of hydrophobia (x 100.)