Table 3: Blood Supply of the Optic Nerve Head Region

Central Retinal Artery Choroid Pial Vessels
Mouse [5] + Ø Ø
Rat [33,34] + Ø (+)
Rabbit [38] (+) ++ +
Quail n.e. n.e. n.e.
Chicken n.e. n.e. n.e.
Pig [39] Ø + ++
Cat [41,42] Ø + ++
Dog [43] Ø + ++
Monkey [48-50] + + +
Human [51-55] + (+) +

n.e. = not examined; Ø = no, (+) = possible, + = clear, ++ = substantial source of optic nerve head capillaries.