The ciliary muscle belongs to the inner eye muscles and is located in the ciliary body (lat. corpus ciliare) - also called the ray body. The ciliary body is a section of the middle eye skin and, in addition to the suspension of the lens and its accommodation by the ciliary muscle, is also involved in the production of the aqueous humor.
The ciliary muscle, which is ring-shaped in humans, is connected to the lens of the eye via the zonula fibers. Through accommodation, it changes the shape of the eye lens so that it can be focused at different distances.