Thursday, March 19, 2009

Ciliary Body

The ciliary body is the circumferential tissue inside the eye which is made up of the ciliary muscle and ciliary processes. It is formed by the inward folding of the various layers of the choroid. The ciliary body is coated by a double layer of tissue, the ciliary epithelium. The inner layer is transparent and covers the vitreous body, and is continuous from the neural tissue of the retina. The outer layer is highly pigmented, continuous with the retinal pigment epithelium, and constitutes the cells of the dilator muscle.

The ciliary body releases a transparent liquid which is called the aqueous humor, which provides most of the nutrients for the lens and the cornea. The other function of the ciliary body is to change the shape of the lens to make the vision adapt for far sight or near sight.