Ciliary Processes

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The Ciliary Processes are located in each eye in the human body.
They are one of the three "zones" of the ciliary body (connecting the choroid with the iris).

The ciliary processes are formed by the plaiting and folding inward of some of the layers of the choroid. Together they form 60-80 radial ridges located behind the iris (which is the coloured part of the eye), and around the margin of the lens.
There are large and small ciliary processes, the "large" ones numbering approx. 66% of the total and being approx. 2.5mm long, and the "small" ones filling the gaps between the larger ones.

The anterior (front) surface of the ciliary processes is turned towards the back of the iris and their posterior (back) surface is connected to the suspensory ligament of the lens.

Generally, the ciliary processes have a similar structure to those of the choroid. However, although the ciliary processes do also include some stellate pigment-cells, there are fewer than in the choroid itself.

 

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".

 

Diagram of the Eye

Clinical Anatomy of the Eye


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