The uvea (/ ˈ j uː v i ə /; [1] derived from Latin: uva meaning "grape"), also called the uveal layer, uveal coat, uveal tract, vascular tunic or vascular layer, is the pigmented middle layer of the three concentric layers that make up an eye, precisely between the inner retina and the outer fibrous layer composed of the sclera and cornea.

2024年8月6日 · The uvea is the middle layer of your eye’s outer wall. It has several vital jobs, including circulating blood to your retinas, focusing your eyes and more.

The uvea consists of structures of the eye beneath the white of the eye (sclera). It has three parts: (1) the iris, which is the colored part of the eye; (2) the ciliary body, which is the structure in the eye that secretes the transparent liquid within the front of the eye; and (3) the choroid, which is the layer of blood vessels between the ...

2016年3月28日 · Read an overview of general eye anatomy to learn how the parts of the eye work together.

2021年4月1日 · Uvea is the middle vascular coat of the eyeball. From anterior to posterior, the uvea or uveal tract can be divided into three parts- Iris, Ciliary body, and choroid. The name “uvea” has originated from the Latin word grape.

While in general terms the anatomy of the human uvea conforms to that described for other species, differences exist – some subtle and some profound. Often, when confronted with an eye from a non-human species, an ophthalmic pathologist can find distinctive clues to the identity of that species from the appearance of the iris, ciliary body ...

2019年2月26日 · Here are the key things you should know about the uvea of your eye. The uvea is the pigmented middle layer of the eyeball. It has three segments: the iris, the ciliary body and the choroid. Iris: The iris of the eye is the thin, circular structure made of connective tissue and muscle that surrounds the pupil.

2016年7月11日 · The uveal tract consists of a pigmented, highly vascular loose fibrous tissue that can be divided into three anatomical regions: anterior iris, central ciliary body, and the posterior choroid. 1 The uveal tract is firmly adherent to the scleral spur anteriorly, the optic disc posteriorly, and at the exit points of the four vortex veins in between.

2023年11月3日 · The uvea is the middle layer of the eye. It lies beneath the white part of the eye (the sclera). It is made of the iris, ciliary body, and choroid. These structures control many eye functions, including

The uvea, also known as the vascular tunic, is a pigmented layer that provides vital nourishment to the eye's delicate tissues. Its primary functions include regulating the amount of light entering the eye and supplying oxygen and nutrients to the retina.