Ciliary ganglion

Dr Tom Foster and Dr Craig Hacking et al.

The ciliary ganglion is one of four parasympathetic ganglia of the head and neck. It receives parasympathetic fibers from the oculomotor nerve.

Gross anatomy

  • ~12 or more branches, termed short ciliary nerves
  • each contains elements from all 3 roots (above), and pierce back of sclera around attachment of optic nerve to supply the globe
  • the vast marjority of fibers from ganglionic cells supply ciliary body (accommodation); only ~3% supply sphincter pupillae
  • note; while both long and short ciliary nerves contain sensory/sympathetic supply to the cornea, iris, & ciliary body; only short ciliary are involved in pupillary constriction & accommodation

Related pathology

  • pathology of the ciliary ganglion can produce a tonic pupil, where the pupil does not react to light and slowly accommodates
  • Adie syndrome: when a non-reactive, slowly accomodating pupil is associated with absent deep tendon reflexes and diaphoresis
Anatomy: Head and neck
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Article information

rID: 52207
System: Head & Neck
Section: Anatomy
Synonyms or Alternate Spellings:

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