Short posterior ciliary arteries Choroid layer of retina to supply visual layer
Long posterior ciliary artery Ciliary body and iris
Central artery of retina Retina
Supraorbital artery Forehead and scalp
Posterior ethmoidal artery Posterior ethmoid air cells
Anterior ethmoidal artery Anterior and middle ethmoid air cells, frontal sinus, nasal cavity, skin of nose
Dorsal nasal Dorsum of nose
Supratrochlear Forehead and scalpVenous drainage
Superior ophthalmic vein
Formed by union of supraorbital and angular vein of face
Receives blood from anterior and posterior ethmoid, lacrimal and muscular branches, central vein of retina, and upper two
vorticose veins of retina
Drains to cavernous sinus
Inferior ophthalmic vein
Forms in floor of orbit
Receives blood from lower extraocular muscles and lower two vorticose veins of retina
Drains to cavernous sinus
Communicates with pterygoid plexus of veins through inferior orbital fissureInnervation of the Orbit
[Plate 120, Oculomotor (III), Trochlear (IV), and Abducent (VI) Nerves: Schema]page 56
page 57Optic nerve
Formed from axons of retinal ganglion cells
Exits through optic canal
Fibers from medial half of each retina cross at optic chiasm and join uncrossed fibers from lateral half of contralateral retina to form