The infraorbital nerve is the direct continuation of the maxillary nerve after the other branches have arisen[^1].
Anatomy
The infraorbital nerve courses from the Pterygopalatine fossa beneath the orbit through the maxillary foramen into the infraorbital canal of the maxilla and exits at the inferior orbital rim through the Infraorbital foramen.
Function
The infraorbital nerve is the sensory terminal branch of the maxillary nerve. It innervates the lower eyelid, the lateral part of the nose, the upper lip, and the lower anterior nasal mucosa.