Fig. 10. Orbital connective tissue septa. The diagrams represent cross sections perpendicular to the orbital axis. A. Near orbital apex. B. Just posterior to globe. C. Slightly anterior to the posterior surface of the globe. D. Approximately at the ocular equator, slplsr, superior levator palpebra–superior rectus complex; Irm, lateral rectus muscle; mrm,medial rectus muscle; irm, inferior rectus muscle; som, superior oblique muscle; iom, inferior oblique muscle; mm, Müller's muscle of the orbit; on, optic nerve. (Koornneef L: The architecture of the musculo-fibrous apparatus in the human orbit. Acta Morphol Neerl Scand 15:35, 1977.)