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Clinical and pathologic studies in cases of well localized vascular diseases of the central nervous system have been successfully made by Foix and his pupils in recent years. In continuation of this work, the author of this monograph collected a large number of reports of cases showing a homonymous bilateral hemianopia clinically. The autopsy in these cases revealed well circumscribed areas of anemic softening of the brain. An attempt was made to correlate the other clinical symptoms with the anatomic observations.
In the first part, a detailed description of the vascular supply of the optic tracts and its cerebral centers is given. Without being given an active part in the discussion, the different theories on the localization of the optical visual center and on the projection of the retina within the external geniculate bodies are recorded. For practical purposes, the following divisions were accepted: optic tract, the region of the