The Stratum Opticum (also
known as the "Layer of Nerve-Fibres") is the
second (2nd) of the layers
forming the retina
of the human eye that light reaches after entering the eye:
That is, after light from outside the body enters the eye through it's
main structures of the cornea,
aqueous
humour, pupil,
lens,
etc..
The retina is composed of several layers which, together, form the "screen"
in the eye onto which an image of the area viewed by the eye is formed,
and information about that image is segmented into packets of information
that are passed to the visual cortex of the brain via the optic
nerve.
The stratum opticum is formed from the extension of
the optic
nerve (which extends from this second layer of the retina, through
the other layers to the back of the retina, from where it leaves the eye
at the fovea
and continues, eventually, to the visual cortex brain).
The stratum opticum is thickest around the optic
disc (also known as the optic
papilla), and gradually becomes thinner towards the "ora serrata"
- which is the edge of the retina closest to the front of the eye, at
which the retina ends in the form of a jagged margin before the most posterior
area to which the ciliary
body is attached.
For more information about related subjects see:
*_ Structure
& Components of the Eye,
*_ Components
of the Central Nervous System,
*_ The
Pathway of a Nerve Impulse,
*_ Structures
and Functions of Neurones,
*_ Diseases
and Disorders of the Nervous System,
*_ Text
books about Ophthalmology. |
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