Optic canal enlargement

Last revised by Yahya Baba on 20 Nov 2020

Optic canal enlargement can be caused by numerous etiologies.


The optic canal has an average transverse diameter of 3.6 ± 0.6 mm 1. The optic canal can be considered enlarged when it is >6.5 mm in transverse diameter 4.


See also

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Cases and figures

  • Case 1: optic nerve sheath meningioma
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