Optic Cord   What is it?  The truth is, the optic nerve is a
direct extension of the brain. The optic cord containts the
optic nerve and sheathing tissue surrounding it. For computer
game enthusiasts, you know how important a good graphics card is
and that they processes a lot of information at high speeds. The
fastest ones use the AGP slot and not the PCI slot because the
AGP slot can transmit data much faster to the computer than the
PCI slot. Anything visual will take a toll on your CPU, or
brain. But our brain is so complex it is so much faster than a
computer graphics card. Therefore, it is important that the eyes
remain near the brain and have an optic cord that is an
extension of the brain. Connected behind the eyes, the optic
nerve also contains a central artery and vein to give the retina
a main source of blood supply.   What does it do?  The brain
needs information to process so that you can tell what you are
looking at. So all the data collected from the retina are sent
to the brain by the optic co