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AAAC69 21/5/05 11:00 AM Page 154
69 The orbit and eyeball

Frontal Superior oblique
Lacrimal Optic nerve
Trochlear Central artery of retina
Oculomotor Ophthalmic artery
Abducent Oculomotor
Nasociliary
Fibrous ring
Inferior oblique
Fig.69.1
The back of the orbit to show the origins of the muscles that move the eyeball
and the nerves that enter through the superior orbital fissure and the optic canal

Axis of Axis of
Superior oblique
orbit eyeball
Medial rectus
Superior rectus
Lateral rectus
Levator palpebrae
superioris

Fig.69.2
The muscles that move the eyeball seen from above

Arteries Nerves
Supratrochlear Ethmoidal
Supra-orbital
Dorsal nasal
Supratrochlear
Supra-orbital
Anterior ciliary
Infratrochlear
Ethmoidal
Lacrimal
Long ciliary
Long posterior ciliary
Short ciliary
Short posterior ciliary
Ciliary ganglion
Optic nerve Frontal
Optic
Ophthalmic Nasociliary
Lacrimal
Fig.69.3
The arteries and nerves of the orbit

154 Head and neck