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Sympathetic pathway to the pupil (anatomy)

Anatomy of the sympathetic pathway showing first-order (central) neuron, second-order (pre-ganglionic) neuron, and third-order (post-ganglionic) neuron. Note the proximity of pulmonary apex to the sympathetic chain and the relationship of the intracavernous sympathetic fibers to the abducens nerve. (Reprinted with permission: Basic and Clinical Science Course, Section 5, American Academy of Ophthalmology.)

Related Media

Associated Disorders

  • Anisocoria
  • Horner syndrome
  • Miosis
  • Mydriasis
  • Transient pupillary abnormalities (cyclic oculomotor palsy, ophthalmoplegic migraine, tadpole pupils, benign episodic unilateral mydriasis)