tonic pupil

tonic pupil definition - medical

tonic pupil

noun
A usually enlarged pupil that responds very slowly to changes in focal length and exposure to light. Also called Piltz sign, Westphal-Piltz pupil.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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