Oculomotor Nerve Diseases
(Third-Nerve Palsy; Cranial Nerve III Diseases)

Diseases of the oculomotor nerve or nucleus that result in weakness or paralysis of the superior rectus, inferior rectus, medial rectus, inferior oblique, or levator palpebrae muscles, or impaired parasympathetic innervation to the pupil. With a complete oculomotor palsy, the eyelid will be paralyzed, the eye will be in an abducted and inferior position, and the pupil will be markedly dilated. Commonly associated conditions include neoplasms, craniocerebral trauma, ischemia (especially in association with diabetes mellitus), and aneurysmal compression. (From Adams et al., Principles of neurology, 6th ed, p270)


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<b>Oculomotor nerve</b>
Oculomotor nerve

of the <b>third nerve</b>.
of the third nerve.

Acquired <b>Oculomotor Nerve</b>
Acquired Oculomotor Nerve

Differentiating <b>Third Nerve</b>
Differentiating Third Nerve


<b>oculomotor nerve</b>
oculomotor nerve

Anatomy of <b>oculomotor nerve</b>, part 1. (Courtesy of William Stewart.)
Anatomy of oculomotor nerve, part 1. (Courtesy of William Stewart.)

2.36 Complete <b>Third Nerve</b>
2.36 Complete Third Nerve

Diagnosis and therapies



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Oculomotor nerveLateral rectus muscleEdinger-Westphal nucleusSuperior rectus muscleOculomotor nucleusInterstitiospinal tractEquatorial mountMedian nerve palsyDuane SilversteinDuane

More information

  • Reported cases - Summary of cases reported on this disease.
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  • SearchMedica - Professional Medical Search.
  • WHO - World Health Organization.
  • PubMed - A service of the National Library of Medicine and National Institutes of Health.
  • MEDLINE - Literature from the National Library of Medicine.
  • MeSH - Medical Subject Headings.
  • DeCS - Health Sciences Descriptors.

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Last update: April 2009