The pigmented layer of the choroid coat represents this blackened lining.
"A Practical Physiology" by Albert F. Blaisdell
Take out both the lens and the iris and the choroid coat of the eye will reproduce both.
"Preventable Diseases" by Woods Hutchinson
The choroid coat will be recognized as the black layer lying subjacent to the sclerotic.
"Special Report on Diseases of Cattle" by U.S. Department of Agriculture
The CHOROID COAT is a vascular membrane, of a rich chocolate-brown color upon its external surface, and of a deep black color within.
"A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition)" by Calvin Cutter
It is found directly behind the iris and is attached to the choroid coat by means of delicate ligaments.
"A Civic Biology" by George William Hunter