Sign or Symptom
tonic pupil
ton·ic pu·pil
Subclass of:
Pupil Disorders
Definitions related to tonic pupil:
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A pupillary abnormality characterized by a poor pupillary light reaction, reduced accommodation, iris sector palsies, an enhanced pupillary response to near effort that results in a prolonged, "tonic" constriction, and slow pupillary redilation. This condition is associated with injury to the postganglionic parasympathetic innervation to the pupil. (From Miller et al., Clinical Neuro-Ophthalmology, 4th ed, pp492-500)NLM Medical Subject HeadingsU.S. National Library of Medicine, 2021
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An abnormality of the pupillary light reaction characterized by a marked slowing of the light reaction of usually just one pupil. The pupil tends to be relatively dilated, and there is reduced accommodation.Human Phenotype Ontology (HPO)The Human Phenotype Ontology Project, 2021
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