Ophthalmology and Visual Sciences

  • blood supply of optic nerve 


     Fig. 1:  Schematic representation of blood supply of: (A) the optic nerve head and (B) the optic nerve.

    Abbreviations: A = arachnoid; C = choroid; CRA = central retinal artery; Col. Br.  = Collateral branches; CRV = central retinal vein; D = dura; LC = lamina cribrosa; NFL = surface nerve fiber layer of the disc; OD = optic disc; ON = optic nerve; P = pia; PCA = posterior ciliary artery; PR and PLR = prelaminar region; R = retina; RA = retinal arteriole; S = sclera; SAS = subarachnoid space.

    (A reproduced from Hayreh 1978 [16]. B modified from Hayreh, S.S. 1974 [8])