About The Medical Condition Pupil, Tonic

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Pupil, Tonic

Pupil, Tonic Medical Condition Defined & Explained
Pupil, Tonic Medical Condition

What's The Definition Of The Medical Condition Pupil, Tonic?

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)

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