UVEAL TRACT Meaning and
Definition
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The uveal tract, also known as the uvea or vascular tunic, is a part of the eye located between the outer fibrous layer (sclera) and the inner sensory layer (retina). It consists of three main structures: the iris, ciliary body, and choroid.
Starting with the iris, it is the colored portion of the eye located in front of the lens. Its primary function is to regulate the amount of light entering the eye through the pupil by controlling its size. The iris contains smooth muscles that contract or relax in response to varying light conditions.
Next, the ciliary body is located just behind the iris and is responsible for producing and secreting aqueous humor. This clear fluid fills the front of the eye to provide nourishment to various structures, maintain the eye's shape, and contribute to intraocular pressure regulation.
The last component of the uveal tract is the choroid, which is situated between the sclera and the retina. It is a highly vascular layer that supplies oxygen and nutrients to the retina, ensuring its proper functioning. The choroid also contains pigmented cells that help absorb excessive light within the eye, preventing visual distortions.
Collectively, the uveal tract plays a crucial role in maintaining the overall health and function of the eye. Any disruptions or abnormalities within this structure can lead to various ocular conditions or diseases, such as uveitis, glaucoma, or choroidal melanoma.
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• The iris, ciliary body, and choroid coat of the eye.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for UVEAL TRACT
- yveal tract
- hveal tract
- jveal tract
- iveal tract
- 8veal tract
- 7veal tract
- uceal tract
- ubeal tract
- ugeal tract
- ufeal tract
- uvwal tract
- uvsal tract
- uvdal tract
- uvral tract
- uv4al tract
- uv3al tract
- uvezl tract
- uvesl tract
- uvewl tract
- uveql tract
Etymology of UVEAL TRACT
The word "uveal" comes from the Latin word "uva", which means "grape". The Latin term "uva" was used to refer to the inner layer of the eye, which has a grape-like appearance. "Tract" is derived from the Latin word "tractus", meaning "a drawing" or "a extending". Therefore, "uveal tract" refers to the anatomical structure of the inner layer of the eye.
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