Dilation of the pupil following scratching of the skin of the neck.ciliospinal reflex
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- pupillary distance,
- pupillary membrane,
- pupillary reflex,
- pupillary zone,
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.