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choroid coat

American  

noun

Ophthalmology.
  1. a pigmented, highly vascular membrane of the eye that is continuous with the iris and lies between the sclera and the retina, functioning to nourish the retina and absorb scattered light.


Etymology

Origin of choroid coat

First recorded in 1735–45


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Light enters the front of the eye through a hole in the choroid coat called the pupil.

From Textbooks ● Jan. 1, 2015

The choroid coat seems to be chiefly composed of a tissue of nerves and minute blood-vessels; the latter give nourishment to the different parts of the eye.

From A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition) by Calvin Cutter

From this he concludes, that the defect of vision is owing to the want of the choroid coat, and, consequently, that this coat is the proper organ of vision.

From Popular Lectures on Zoonomia Or The Laws of Animal Life, in Health and Disease by Thomas Garnett

It rests upon the choroid coat and spreads over about two thirds of the back surface of the eyeball.

From Physiology and Hygiene for Secondary Schools by Francis M. Walters

The choroid coat will be recognized as the black layer lying subjacent to the sclerotic.

From Special Report on Diseases of Cattle by United States. Bureau of Animal Industry

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