Medical Dictionary

orbital fissure

noun

medical Definition of orbital fissure

:either of two openings transmitting nerves and blood vessels to or from the orbit:
a :one situated superiorly between the greater wing and the lesser wing of the sphenoid bone called also superior orbital fissure, supraorbital fissure
b :one situated inferiorly between the greater wing of the sphenoid bone and the maxilla called also inferior orbital fissure, infraorbital fissure, sphenomaxillary fissure

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