Which anatomy is relevant to lateral canthotomy and cantholysis?

Updated: Jun 11, 2020
  • Author: Anna G Gushchin, MD; Chief Editor: Edsel B Ing, MD, MPH, FRCSC, PhD, MA  more...
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The orbit, which protects the globe, is shaped like a cone with four walls. Seven bones conjoin to form the orbital structure, as shown in the image below.

This image of the right orbit shows the 7 bones th This image of the right orbit shows the 7 bones that contribute to its structure.

The lateral orbital wall is formed by the greater wing of the sphenoid and the zygoma. The lateral canthal tendon is a condensation of the superior and inferior crura that insert at the lateral orbital tubercle (Whitnall tubercle) 3 mm posterior to the lateral orbital rim.

For more information about the relevant anatomy, see Orbit Anatomy and Eye Globe Anatomy.

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