2024年8月6日 · Your uvea is a three-part structure that surrounds most of your eye. The three parts of it all play a vital role in eye function. They support surrounding tissues, help control key eye functions and much more. Many conditions can affect the parts of the uvea, but there are also many things you can do to protect the health of this key layer.

2016年3月28日 · Read an overview of general eye anatomy to learn how the parts of the eye work together. All content on the Academy’s website is protected by copyright law and the Terms of Service.

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.

Uveal tract consists of the iris, ciliary body, and choroid. It is embryologically derived from neuroectodermand neural crest. Firm attachments exist at 3 sites: Low magnification view of normal iris. Higher magnification view of normal iris. The iris separates the anterior segment into anterior +posterior chambers.

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 adjusting to different levels of light or distances of objects. Inflammation of one or more of these structures is called uveitis.

2014年1月1日 · Most cases show intraocular haemorrhage and loss or incarceration of intraocular structures. A particular peculiar but sight threatening condition of the uvea is sympathetic uveitis (ophthalmia), which is a severe bilateral granulomatous inflammation of the uveal tract that follows unilateral trauma or surgery.

The uvea is the vascular portion of the eye and is made up of the iris, ciliary body, and choroid. Commonly used terminology includes anterior uvea for the iris and ciliary body and posterior uvea for the choroid. Because the uvea is highly vascular, it has the capacity to become inflamed after local or systemic stimuli.

2014年2月1日 · Middle layer of globe between outer sclera and inner retina Highly vascular but no lymphatics Extends from ciliary body to optic nerve Inner aspect is adherent to retinal pigment epithelium; outer surface is loosely attached to overlying sclera

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.

2024年8月2日 · Anterior uveitis is the most common type and manifests with periocular pain, ocular hyperemia (red eye), and photophobia. Posterior uveitis manifests with painless visual disturbances, such as floaters and decreased visual acuity. Uveitis is typically diagnosed clinically based on history and comprehensive eye examination findings.