tonic pupil

pupil

 (P) [pu´pil]

the opening in the center of the iris through which light enters the eye; see also Plate 17.

Adie's pupil tonic pupil.

Argyll Robertson pupil one that is miotic and responds to accommodation effort, but not to light.

fixed pupil a pupil that does not react either to light or on convergence, or in accommodation.

Hutchinson's pupil one that is dilated while the other is not.

tonic pupil a usually unilateral condition of the eye in which the affected pupil is larger than the other, responds to accommodation and convergence in a slow, delayed fashion, and reacts to light only after prolonged exposure to dark or light; see also adie's syndrome. Called also Adie's pupil.

Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

ton·ic pu·pil

a general term for a pupil with delayed, slow, long-lasting contractions to light and to a near vision effort, often with light-near dissociation; due to denervation and aberrant reinnervation of the iris sphincter; seen in various autonomic neuropathies and in Adie syndrome.

Farlex Partner Medical Dictionary © Farlex 2012

ton·ic pu·pil

(ton'ik pyū'pil)

A general term for a pupil with delayed, slow, long-lasting contractions to light and to a near vision effort, often with light-near dissociation; due to denervation and aberrant reinnervation of the iris sphincter; seen in various autonomic neuropathies and in Adie syndrome

Medical Dictionary for the Health Professions and Nursing © Farlex 2012