The infra-orbital nerve exits the infra-orbital canal through the infra-orbital foramen inferior to the orbital margin and divides into nasal, palpebral, and superior labial branches:
Nasal branches supply skin over the lateral aspect of the external nose and part of the nasal septum.
Palpebral branches supply skin of the lower eyelid.
Superior labial branches supply skin over the cheek and upper lip, and the related oral mucosa.