Volume 1

Diseases of the nervous system : a text-book of neurology and psychiatry / by Smith Ely Jelliffe and William A. White.

  • Jelliffe, Smith Ely, 1866-1945.
Date:
1915
Catalogue details

Licence: Public Domain Mark

Credit: Diseases of the nervous system : a text-book of neurology and psychiatry / by Smith Ely Jelliffe and William A. White. Source: Wellcome Collection.

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    myosis. The form and the presence of irregularities, oval, polygonal, and implantation noted. Particular attention should be directed to the elimination of changes due to drugs, to accidents or injuries, and to inflammatory products. The reactions to light should then be tested, at first with clear daylight, the patient looking at some distant object. In bed cases, electric hand lamps are very serviceable; with these the light is best directed somewhat obliquely. The reaction may be prompt and wide, Fig. 7.—The paths of the chief eye reflexes: (1) Pupillary reflex: Retina; optic; X; corpora quadrigemina; X; oculomotor nucleus, oculomotor nerve; ciliary ganglion; sphincter iridis. (2) Closing eyes to light: Retina; optic; X; corpora quadrigemina, Meynert’s fibers; X; facial nucleus; facial nerve; lid muscles. (3) Winking on ap¬ proach of object: Retina; optic; X; corpora quadrigemina or pulvinar, external geniculate; cortex; pyramidal tract; X; facial nucleus; facial nerve; lid. (Same paths also in 2.) (4) Corneal reflex: Cornea; trigeminus; trigem. nucleus; facial nucleus; facial nerve; lid. (Lewandowsky: Funktionend. Centralnervensystem, p. 122, Fig. 29.) prompt and restricted, slow, sluggish, diminished or absent. Each eye is to be tested separately, and then the consensual test applied by illuminating one eye and noting the reaction in the other. Wernicke’s hemiopic phenomenon should be sought for in hemian- opsias. In this the pupil does not react if the light falls upon the blind segment of the retina. Tests for the accommodation reflexes are then made. The patient looks at the finger as it is moved near or away from the eye, and there is corresponding contraction and dilatation of the pupils. Here the 3