choroid

choroid /cho·roid/ (ko´roid)

1. the middle, vascular coat of the eye, between the sclera and the retina.choroid´al

2. resembling the chorion.

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cho·roid (kôroid) or cho·ri·oid (kôr-oid)

n.

The dark-brown vascular coat of the eye between the sclera and the retina.

adj.

Relating to the chorion or corium.

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Choroid

The part of the uveal tract behind the ciliary body. The choroid underlies and nourishes the retina and absorbs scattered light.

Mentioned in: Uveitis

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choroid

[kôr′oid]

Etymology: Gk, chorion + eidos, form

a vascular layer of tissue between the retina and the sclera of the eye that supplies blood to the outer retina.

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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.

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choroid

the middle, vascular coat of the eye, between the sclera and the retina.

It contains an abundant supply of blood vessels and a large amount of brown pigment which 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. See also tapetum, lamina cribrosa, lamina basilaris, vascular lamina.

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choroid ependyma

the ependymal cells which embrace choroid vessels to make up the choroid plexus.

choroid inflammation

see choroiditis.

choroid plexus

see choroid plexus.