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

Their external border is continuous with the internal layer of the choroid coat.

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

The choroid coat, which constitutes the second investing membrane of the eye, is of a dark brown color upon its outer surface, and of a deep black within.

From Popular Education For the use of Parents and Teachers, and for Young Persons of Both Sexes by Mayhew, Ira

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