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

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

Of what is the choroid coat chiefly composed?

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

Between the sclerotic and the subjacent choroid coat is a lymph space traversed by some loose pigmented connective tissue,—the 92 lamina fusca.

From Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" by Various

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 Walters, Francis M.