choroidea


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Related to choroidea: retina

choroid

 [kor´oid]
the middle, vascular coat of the eye, between the sclera and the retina. adj., adj choroid´al. It contains an abundant supply of blood vessels and a large amount of brown pigment that serves to reduce reflection or diffusion of light when it falls on the retina. Adequate nutrition of the eye is dependent upon blood vessels in the choroid.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

cho·roid

(kor'oyd), [TA]
Portion of the middle or vascular layer of the eyeball lying between the pigment epithelium and the sclera and posterior to the other parts of the vascular layer, the ciliary body, and iris.
Synonym(s): choroidea [TA]
[G. choroeidēs, a false reading for chorioeidēs, like a membrane]
Farlex Partner Medical Dictionary © Farlex 2012

choroid

noun The highly vascularised and pigmented nutrient middle layer of the eye, located between retina and sclera (the tapetum is an iridescent layer in the choroid of some eyes); part of the uvea.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

cho·roid

(kōr'oyd) [TA]
The middle vascular tunic of the eye lying between the retina and the sclera.
Synonym(s): choroidea [TA] .
[G. choroeidēs, a false reading for chorioeidēs, like a fetal membrane]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
[14], both parasympatholytic and sympathomimetic effects of drug used in the study may have caused variation in mechanisms acting on choroidea. Manual measurements may have also contributed to these results, which may be completely incidental.
Based on these results, it appears to be impossible to determine the extent of drug effects on the choroidea through evaluation of anterior chamber data.