Abducens nerve palsy

Last revised by Mostafa El-Feky on 18 Mar 2023

Abducens nerve palsy, or sixth nerve palsy, results in weakness of the ipsilateral lateral rectus muscle.

Patients present with horizontal diplopia with an inability to abduct the ipsilateral eye, thereby resulting in an esotropia (nasal deviation of the eye).

The abducens nerve has the longest subarachnoid course of all the cranial nerves.

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Cases and figures

  • Case 1: due to pontine lesion
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  • Case 2: due to small infarct involving the facial colliculus
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  • Case 3: compressed by vascular loop
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  • Case 4: compressed by petrous apex chondrosarcoma
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