Dilated pupil

Dilated pupil is a topic covered in the Diagnosaurus.

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Emergency Central

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DDx

  • Cranial nerve 3 palsy
  • Iris damage due to acute glaucoma
  • Mydriatic drugs, eg, atropine
  • Sympathomimetic poisoning, eg, amphetamines, cocaine
  • Anticholinergic poisoning, eg, atropine, tricyclic antidepressants
  • Physiologic anisocoria (unequal pupils, react normally)

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Last updated: December 1, 2014