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The first chapters of this book relate to discrete and inadequately understood functions of the eye itself, such as the investigations of autonomic activity of the retina. Processes of the cells concerned with this activity are thought to by-pass the lateral geniculate body and proceed by poorly recognized pathways to the hypothalamus and midbrain, there relating the visual system with trigeminal, sympathetic, and parasympathetic systems. Some of the expressions of these oculodiencephalic relationships as they influence intraocular pressure are considered in the final chapter. Experimental studies utilizing light stimuli, drugs, and other factors result in changes in intraocular pressure, and the authors regard primary glaucoma as a manifestation of disturbance in the midbrain-hypothalamic relationships involved in the maintenance of appropriate levels of intraocular tension.
Parsons T. Auge und Zwischenhirn. AMA Arch NeurPsych. 1958;79(5):542. doi:10.1001/archneurpsyc.1958.02340050070008