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su·pe·ri·or or·bi·tal fis·sure[TA]
a cleft between the greater and the lesser wings of the sphenoid establishing a channel of communication between the middle cranial fossa and the orbit, through which pass the oculomotor and trochlear nerves, the ophthalmic division of the trigeminal nerve, the abducens nerve, and the superior or combined ophthalmic veins.
sphenoidal fissure, sphenoid fissure
The fissure separating the wings and body of the sphenoid bone.
See also: fissure