Inferior orbital fissure contents (mnemonic)

Mnemonic for the contents of the inferior orbital fissure (from medial to lateral) is:

• Inferior Orbit Gets Infra-Orbital Nerves and VeinZ

Mnemonic

Inferior Orbit Gets Infra-Orbital Nerves and VeinZ

• IO: inferior ophthalmic vein (tributary to both pterygoid venous plexus and cavernous sinus)
• G: ganglionic branches from pterygopalatine ganglion to maxillary division of trigeminal nerve
• ION: infra-orbital nerve (branch CN V2)
• A: infra-orbital artery (branch maxillary artery)
• V: infra-orbital vein (drains inferior orbit, communicates with inferior ophthalmic vein, tributary to pterygoid venous plexus)
• Z: zygomatic nerve (branch CN V2)