Retina of the eye
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[edit] Retina of the eye
==RETINA
All this intricate superstructure exists in the interests of the retina,
itself an amazing structure. It translates light into nerve signals, allows us to
see under conditions that range from starlight to sunlight, discriminates wave-
length so that we can see colors, and provides a precision sufficient for us to
detect a human hair or speck of dust a few yards away.
The retina is part of the brain, having been sequestered from it early in
development but having kept its connections with the brain proper through a
bundle of fibers—the optic nerve. Like many other structures in the central
nervous system, the retina has the shape of a plate, in this case one about a
quarter millimeter thick. It consists of three layers of nerve-cell bodies sepa-
rated by two layers containing synapses made by the axons and dendrites of
these cells.
- a cross section under high magnification..
[edit] Vision
All of us with sight may see, however not all have a Vision to see the Future..
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