optic canal


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Related to optic canal: Cranial nerves, foramen ovale, Foramen rotundum

optic canal

[′äp·tik kə′nal]
(anatomy)
The channel at the apex of the orbit, the anterior termination of the optic groove, just beneath the lesser wing of the sphenoid bone; it gives passage to the optic nerve and ophthalmic artery.
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References in periodicals archive ?
The intracranial extension has been described through the three major openings in the posterior aspect of the orbit, which include the superior orbital fissure, optic canal and the inferior orbital fissure.
Orbital reconstruction is fraught with the risk of encroaching on the optic canal and this is yet another fine example of upholding Apollo Hospital's vision of using Cutting edge technology for enhancing patient safety.
If the penetration is parallel to the orbital roof, it will violate the cranium through the superior orbital fissure or optic canal, and usually does not result in bone fracture.