IMPORTANT: We currently have a number of bugs related to image cropping and are actively trying to resolve them. In the meantime, we have disabled cropping. Apologies for any inconvenience. Stay informed: radiopaedia.org/chat

Orbital anatomy (illustration)

Case contributed by Frank Gaillard
Diagnosis not applicable
Diagram

Lateral view of the orbit demonstrating:

  • oculomotor nerve (CN III) with its inferior and superior divisions
  • extra-ocular muscles - lateral rectus resected
  • ciliary ganglion

Case Discussion

These illustrations are adapted from the original illustration by Patrick Lynch released on Creative Commons Attribution 2.5 License 2006 and available on Wikimedia commons here.

A number of changes were made: 

  • optic nerve made lighter to distinguish from oculomotor nerve
  • supply to superior oblique muscle removed (this is supplied by the trochlear nerve, not the oculomotor nerve)
  • ciliary ganglion simplified
  • superior oblique passes under superior rectus (modified by Anka Friedrich here)

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.