The optic foramen is the opening to the optic canal. The canal is located in the sphenoid bone; it is bounded medially by the body of the sphenoid and laterally by the lesser wing of the sphenoid.
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. Compared to the optic nerve, the ophthalmic artery is located inferolaterally within the canal.
The left and right optic canals are 25mm apart posteriorly and 30mm apart anteriorly. The canals themselves are funnel-shaped (narrowest anteriorly).
The optic foramen is the opening to the opticcanal. The canal is located in the sphenoid bone; it is bounded medially by the body of the sphenoid and...
of photoreceptors. The optic nerve leaves the orbit (eye socket) via the opticcanal, running postero-medially towards the optic chiasm, where there is...
females (34%) compared to males (22%), opticcanal protrudation was 33.3 and 30.5% in males and females, and opticcanal dehiscence was detected 11.3 and 9...
tuberculum sellae. The opening of each opticcanal is placed at either lateral end of the chiasmatic sulcus. The optic chiasm is situated superior and quite...
Optic neuropathy is damage to the optic nerve from any cause. The optic nerve is a bundle of millions of fibers in the retina that sends visual signals...
from the eye through the opticcanal in the skull and attaches to the diencephalon. The retina itself is derived from the optic cup, a part of the embryonic...
pulses using rods and cones. The optic nerve then carries these pulses through the opticcanal. Upon reaching the optic chiasm the nerve fibers decussate...
the sense of smell from the nasal cavity. II Optic Sensory Retinal ganglion cells Located in the opticcanal. Transmits visual signals from the retina of...
anteriorly, passing through the opticcanal inferolaterally to the optic nerve. It can also pass superiorly to the optic nerve in a minority of cases. In...
et al. conclude that "the opticcanal was spared ... [the vision loss being] secondary to acute glaucoma or swelling of the optic nerve and compression against...
surface. The superior oblique arises immediately above the margin of the optic foramen, superior and medial to the origin of the superior rectus, and,...
Attractive Faces Are Girl Visitors. Say Hello! CN I Olfactory nerve CN II Optic nerve CN III Oculomotor nerve CN IV Trochlear nerve (Pathetic nerve) CN...
the pituitary gland on each side, and enters the orbital apex via the opticcanal. As a venous sinus, the cavernous sinus receives blood from the superior...
Posterior ischemic optic neuropathy (PION) is a medical condition characterized by damage to the retrobulbar portion of the optic nerve due to inadequate...
superior to the sphenoid sinus in a midline position with at least one opticcanal bulge. Acute ethmoiditis in childhood and ethmoidal carcinoma may spread...
The hyaloid canal (Cloquet's canal and Stilling's canal) is a small transparent canal running through the vitreous body from the optic nerve disc (at the...
But My Brother Says Big Brains Matter More FORAMINA: Cribriform plate Opticcanal Superior Orbital Fissure Superior Orbital Fissure Superior Orbital Fissure...
and represents one of its largest branches. Its origin occurs near the opticcanal. It usually branches off the ophthalmic artery just after the ophthalmic...
middle cranial fossa and then travel with the ophthalmic artery in the opticcanal or on the ophthalmic nerve through the superior orbital fissure. From...
wing of the sphenoid bone and forms part of the lateral wall of the opticcanal. Between each ACP lies the sella turcica, which holds the pituitary gland...
Dorsum sellae Posterior clinoid process Sphenoidal sinus Lesser wing Opticcanal Anterior clinoid process Superior orbital fissure Greater wing Foramen...
called orbitosphenoids. The main features of the lesser wing are the opticcanal, the anterior clinoid process, and the superior orbital fissure. The...
internal carotid artery. It is contained within the optic stalk of the eye and extends from the optic disc through the vitreous humor to the lens. Usually...
Panama Canal Eurasia Canal Istanbul Canal Nicaragua Canal Salwa Canal Thai Canal Sulawesi Canal Two Seas Canal Northern river reversal Balkan Canal or...
serve as attachments). J. monesi probably had a constricted opticcanal, which contains the optic nerve and ophthalmic artery, corresponding to vision. Eumegamyines...
Glaucoma is a group of eye diseases that lead to damage of the optic nerve, which transmits visual information from the eye to the brain. Glaucoma may...
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