Ophthalmoplegia

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Clinic

  • It is an entity, also called extraocular muscle palsy
  • It usually involves three cranial nerves
    • Third ( CN-3, Oculomotor)
    • Fourth (CN-4, Trochlear)
    • Sixth (CN-6, Abducens)


Sign / Symptoms

Double vision is the characteristic symptom in all three cases.

  • In oculomotor paralysis, the eye drifts outward and slightly downward and has difficulty turning inward and upward. In addition, ptosis is occurred. Also pupil may be enlarged
  • Trochlear paralysis involve superior oblique, causes a vertical deviation of the affected eye.
  • Abducens nerve paralysis affects lateral rectus, therefore the affected eye turns inward toward the nose and cannot fully turn outward.


Causes