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. Author manuscript; available in PMC: 2017 Jan 1.
Published in final edited form as: Prog Retin Eye Res. 2016 Jan;50:108–144. doi: 10.1016/j.preteyeres.2015.10.001

Fig. 6.

Fig. 6

Schematic representation of blood supply of the optic nerve and retina. Left half shows retinal appearance. (Modified from Hayreh SS. Anatomy and physiology of the optic nerve head. Trans Am Acad Ophthalmol Otolaryngol 1974;78:OP240-54.).

Abbreviations: A = arachnoid; C = choroid; CRA = central retinal artery; Pial Col. Br. = Collateralbranches to pia mater; CRV = central retinal vein; CZ = circle of Zinn and Haller; D = dura; LC =lamina cribrosa; OD = optic disc; ON = optic nerve; PCA = posterior ciliary artery; PR =prelaminar region; R = retina; S = sclera; SAS = subarachnoid space.