Abstract
The uveal tract consists of three parts: iris, ciliary body and choroid. Iris is the colored part of the eye, which makes the pupil regulate the light rays. The ciliary body consists of a ring of muscles tissue that changes the shape of the lens and secretes the clear fluid (aqueous humor) that fills the inside of the eye (anterior segment). And the choroid tissue is thin filled with blood vessels that are part of the middle layer of the eye ball between the sclera (white outer layer of the eye) and the retina (the inner layer of nerve tissue at the back of the eye). The choroid is a layer of blood vessels and connective tissue that lines the back of the eye and supplies nutrients to the retina. Together, these three structures make up the uveal tract and play important roles in the anatomy and function of the eye. This book chapter will explain about the Uveal anatomy and Physiology, its understanding.