choroid coat

noun

, Ophthalmology.

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.

First recorded in 1735–45

The retina is dark purple in color, this color being caused by a layer of cells next to the choroid coat.

It is found directly behind the iris and is attached to the choroid coat by means of delicate ligaments.

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

Take out both the lens and the iris and the choroid coat of the eye will reproduce both.

The pigmented layer of the choroid coat represents this blackened lining.

April 25, 2024firkin

[fur-kin ]

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