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.

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Etymology

Origin of choroid coat

First recorded in 1735–45

Example Sentences

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

From Textbooks • Jan. 1, 2015

What is the color of the external surface of the choroid coat?

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

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 Garnett, Thomas

These circumstances, in my opinion, render it certain, that the retina, and not the choroid coat, is the organ of vision.

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

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 Cutter, Calvin