Table of Contents
What is an uvea?
(YOO-vee-uh) The middle layer of the wall of the eye.
Is uvea a word?
Yes, uvea is in the scrabble dictionary.
What is uvea in the eye?
The uvea is the middle layer of tissue in the wall of the eye. It consists of the iris, the ciliary body and the choroid. When you look at your eye in the mirror, you will see the white part of the eye (sclera) and the colored part of the eye (iris). The iris is located inside the front of the eye.
What is choroid and uvea?
The choroid is the posterior portion of the uvea and lies between the retina and sclera. The innermost layer is the choriocapillaris, a thin layer of capillaries delimited on the inner aspect by a basement membrane (Bruch’s membrane). The choriocapillaris provides nutrition to the outer retina.
What is retina and uvea?
If we think of the eye as a hollow, fluid-filled, 3-layered ball, then the outer most layer is the sclera (a tough coat), the inner-most is the retina, (the thin light-gathering layer), and the middle layer is the Uvea (the vascular layer).
What are the structures of uvea?
The uvea consists of three components: iris, ciliary body, and choroid. The iris is a ring of tissue with a central opening forming the pupil; it separates the anterior and posterior chambers. The outer edge of the iris, known as the iris root, inserts into the ciliary body.
What is the plural of uvea?
The uvea (plural: uveas), also called the uveal layer or vascular tunic is the middle of the three layers that make up the eye.
Is the uvea part of the retina?
The uveal tract is the middle layer of the eye, divided into the anterior uvea (iris, ciliary body) and posterior uvea (choroid). The uvea is sandwiched between an outer layer (sclera) and an inner layer (retina). The anterior segment is separated from the posterior segment by the lens.
What is the posterior uvea?
Posterior uveitis, also known as choroiditis, refers to inflammation of the choroid, the back part of the uvea. Posterior uveitis may affect the retina and/or the optic nerve and may lead to permanent loss of vision. Panuveitis refers to inflammation throughout the eye and does not refer to a specific area.
Which veins drain the uvea?
The vessels of this layer branch and form medium-sized vessels. The layer of these medium-sized vessels is known as Sattler’s layer. These vessels again branch forming smaller vessels and capillaries. Venues of choroid drain into veins which ultimately drain into four vortex veins (one from each quadrant of the eye).
What is uvea made of?
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.
What is the choroid?
(KOR-oyd) A thin layer of tissue that is part of the middle layer of the wall of the eye, 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 choriod is filled with blood vessels that bring oxygen and nutrients to the eye.
Which of the following are included in the uvea?
Also called uvea. Anatomy of the eye, showing the outside and inside of the eye including the eyelid, pupil, sclera, iris, cornea, lens, ciliary body, retina, choroid, vitreous humor, and optic nerve.
What does Uvea mean in medical terms?
medical Definition of uvea. : the middle layer of the eye consisting of the iris and ciliary body together with the choroid coat — called also vascular tunic.
What is the uvea made up of?
The uvea contains many blood vessels and a variable quantity of pigment. From the Greek word uvea, a grape, because of the resemblance of the uvea to a peeled black grape). See also UVEITIS. The middle of the three coats of tissue surrounding the eye, comprising the choroid, iris, and ciliary body.
What is the anterior uvea of the eye?
It includes the iris and ciliary body (the anterior uvea) and the choroid. The coat of the eye lying immediately under the outer SCLERA (the CHOROID ), together with its continuum, the CILIARY BODY and the IRIS. The uvea contains many blood vessels and a variable quantity of pigment.
What is the difference between Iris and Uvea?
Iris and Uvea Definition. 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.