Inferior orbital fissure

The inferior orbital fissure is about 30 mm long and up to 5 mm wide bony gap between the great wing of the sphenoid and the orbital floor in the human skull. She opens her eyes cave towards the wing palate pit ( pterygopalatine fossa ) and the temporal fossa. Due to the inferior orbital fissure draw the following structures:

• Infraorbital nerve ( branch of the maxillary nerve )
• Zygomatic nerve ( branch of the maxillary nerve )
• Infraorbital artery ( branch of the maxillary artery )
• Parasympathetic fibers from the pterygopalatine ganglion
• Vena infraorbital

The inferior orbital fissure is like a net covered by the smooth muscle of the orbital muscle. It can compress or yield in the orbital contents contraction when it is pushed in contraction of muscles of the eye and eyelid back and intraorbital pressure increases.