Optic canal
| Optic foramen | |
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| File:Gray193.png
Base of the skull. Upper surface. (On the left, "Optic foramen" is the 12th label from the top.
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| Details | |
| Latin | canalis opticus, foramen opticum ossis sphenoidalis |
| Identifiers | |
| Dorlands /Elsevier |
c_04/12208747 |
| TA | Lua error in Module:Wikidata at line 744: attempt to index field 'wikibase' (a nil value). |
| TH | {{#property:P1694}} |
| TE | {{#property:P1693}} |
| FMA | {{#property:P1402}} |
| Anatomical terms of bone
[[[d:Lua error in Module:Wikidata at line 863: attempt to index field 'wikibase' (a nil value).|edit on Wikidata]]]
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The optic foramen is the opening to the optic canal.
The superior surface of the sphenoid bone is bounded behind by a ridge, which forms the anterior border of a narrow, transverse groove, the chiasmatic groove (optic groove), above and behind which lies the optic chiasma; the groove ends on either side in the optic foramen, which transmits the optic nerve and ophthalmic artery (with accompanying sympathetic nerve fibres) into the orbital cavity.
The left and right optic canals are 25mm apart posteriorly and 30mm apart anteriorly. They are funnel-shaped (narrowest anteriorly).
Additional images
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The seven bones which articulate to form the orbit.
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Sphenoid bone. Upper surface.
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Medial wall of left orbit.
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Dissection showing origins of right ocular muscles, and nerves entering by the superior orbital fissure.
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Optic canal
See also
References
This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)
External links
- Anatomy photo:29:os-0501 at the SUNY Downstate Medical Center
- Atlas image: eye_6 at the University of Michigan Health System - (look for #3)
- Anatomy image: skel/internal2 at Human Anatomy Lecture (Biology 129), Pennsylvania State University (look for #10)
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