optic tract
Oculomotor nerve (CN III)
Runs in lateral wall of cavernous sinus
Enters orbit through superior orbital fissure
Contains parasympathetic fibers to sphincter pupillae and ciliary muscles
Supplies
Levator palpebrae superioris
Superior rectus
Medial rectus
Inferior rectus
Inferior oblique
Trochlear nerve (CN IV)
Runs in lateral wall of cavernous sinus
Passes through superior orbital fissure
Supplies superior oblique muscle
Abducent nerve (CN VI)
Courses through cavernous sinus
Enters orbit via superior orbital fissure
Innervates lateral rectus muscle
Branches of the ophthalmic nerve (CN V 1 )
Lacrimal nerve to lacrimal gland
Frontal nerve
Divides into supraorbital and supratrochlear
Supplies upper eyelid, forehead, and scalp
Nasociliary nerve and its branches
Infratrochlear to eyelids, conjunctiva, and nose
Anterior and posterior ethmoidal nerves to sphenoid and ethmoid sinuses and anterior cranial fossa
Long ciliary nerves to dilator pupillae
Short ciliary nerves
Branches from ciliary ganglion
Carry parasympathetic and sympathetic fibers
Innervate ciliary body and iris