The Orbiculus Ciliaris is an older (now
lesser-used) name for the ciliary
ring which is located in each eye in the human body. This is one of
the three "zones" of the ciliary
body (connecting the choroid
with the iris).
The ciliary ring (or "orbiculus ciliaris")
is an area approx. 4 mm wide in which the ciliary body is connected to
the anterior (front) part of the choroid.
This is primarily a connecting component and as such does not have as
active a role as the ciliary
muscle, for example.
The subject of visual (also known as "physiological") optics
is a key component of many courses within the fields of both biology and
physics. It is also an essential consideration in the design of displays
and control units used in many applications from televisions and mobile
telephones to advanced aircraft. In the context of engineering "visual
optics" is one of several medical and psychological topics in the
important area of "Human Factors".
For more information about the nervous system visit:
of the Central Nervous System,
Pathway of a Nerve Impulse,
and Functions of Neurones,
and Disorders of the Nervous System.