Terminology and Classification

The anterior ethmoid artery can be ligated, clipped, or diathermied for epistaxis. This might be necessary if, as a complication of surgery, it is partially torn.

If the artery has been divided and has retracted into the posterior compartment of the eye, this is a different situation as it can raise the intraorbital pressure and impair vision. Under these circumstances, no attempt should be made to find and tie the artery. This will cause more damage as the anterior ethmoid artery has retracted within the substance of the orbit and be tween septations of fibrous tissue that support the fat within the orbit. If the artery has retracted into the orbit, the posterior compartment usually needs to be decompressed (see section on Peroperative Complications, p. 171).

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