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tonic pupil


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(Adie’s pupil) a pupil that is dilated as a result of damage to the nerves supplying the ciliary muscle and iris. It reacts poorly to light but may constrict better for near vision, with slow redilation on refixation at a distance. The tonic pupil is sensitive to dilute 0.1% pilocarpine drops, which cause marked constriction but have little effect on a normal pupil. The tonic pupil may become miotic (see miosis) over time.

Subjects: Medicine and Health.


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