tonic pupil

tonic 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 contracts normally for near vision, with slow redilation of the pupil on refixation at a distance. The most common characteristic of the tonic pupil is its extreme sensitivity to dilute 0.1% pilocarpine drops, which cause marked constriction of a tonic pupil but has little effect on a normal pupil.

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a usually unilateral condition of the eye in which the affected pupil is larger than the other and has light-near dissociation, responding slowly to accommodation and convergence and reacting to light only after prolonged exposure to dark or light. Called also Adie p., myotonic p., and pupillotonia. See also Adie syndrome, under syndrome.

Medical dictionary. 2011.

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  • tonic pupil — 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 of the pupil on refixation at a distance. The …   The new mediacal dictionary

  • Adie's pupil — tonic pupil …   The new mediacal dictionary

  • Pupil — The opening of the iris. The pupil may appear to open (dilate) and close (constrict) but it is really the iris that is the prime mover; the pupil is merely the absence of iris. The pupil determines how much light is let into the eye. Both pupils… …   Medical dictionary

  • Argyll Robertson pupil — Classification and external resources ICD 10 A52.1, H58.0 ICD 9 …   Wikipedia

  • Adie pupil syndrome — Ad·ie pupil, syndrome (aґde) [William John Adie, English neurologist, 1886–1935] see tonic pupil, under pupil, and see under syndrome …   Medical dictionary

  • Adie's pupil — see tonic pupil W. J. Adie (1886 1935), British physician …   Medical dictionary

  • Adie pupil — tonic p …   Medical dictionary

  • myotonic pupil — tonic p …   Medical dictionary

  • Ciliary ganglion — Nerve: Ciliary ganglion Detailed view of nerves of lateral orbit showing the ciliary ganglion immediately behind the globe of the eye …   Wikipedia

  • syndrome — The aggregate of symptoms and signs associated with any morbid process, and constituting together the picture of the disease. SEE ALSO: disease. [G. s., a running together, tumultuous concourse; (in med.) a concurrence of symptoms, fr. syn,… …   Medical dictionary

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