VASOMOTOR NERVES OF VESSELS IN THE HUMAN OPTIC-NERVE

Aminergic and cholinergic vasomotor nerves in vessels of the human opt ic nerve were studied morphologically, Aminergic nerve fibers were obs erved by the glyoxylic acid method. Cholinergic nerve fibers were obse rved by light microscopy after acetylcholinesterase staining by the Ka rnovsky-Roots method and Tago's modified method, In the retrobulbar op tic nerve behind the bulbus, aninergic and cholinergic vasomotor nerve s were observed to be dense in the central retinal artery and vein and posterior ciliary arteries, A large number of vasomotor nerves were a lso demonstrated in vessels in the septum of the optic nerve, but they were sparse in pial vessels. Further centrally, a few vasomotor nerve s were found in pial vessels of the intracanalicular and intracranial optic nerve, but few were observed in the septum of the optic nerve, A t the optic chiasm they were densely distributed in pial vessels.