| choroid tela of third ventricle | A double fold of pia mater, enclosing subarachnoid trabeculae, between the fornix above and the epithelial roof of the third ventricle and the thalami below; at each lateral margin is a vascular fringe projecting into the choroidal fissure of the lateral ventricle; on its undersurface are several small vascular projections filling the folds of the ependymal roof of the third ventricle. Synonym: tela choroidea ventriculi tertii, tela choroidea superior, triangular lamella, velum interpositum, velum triangulare. (05 Mar 2000) |
|---|---|
| choroid veins of eye | Several veins (usually four) from the vascular tunic formed of veins accompanying the posterior ciliary arteries and the ciliary body; then drain into the superior or inferior ophthalmic vein. Synonym: venae vorticosae, venae choroideae oculi, choroid veins of eye, Stensen's veins, vasa vorticosa, vorticose veins. (05 Mar 2000) |
| choroidal | Relating to the choroid (choroidea). (05 Mar 2000) |
| choroidal fissure | The narrow cleft along the medial wall of the lateral ventricle along the margins of which the choroid plexus is attached; it lies between the upper surface of the thalamus and lateral edge of the fornix in the central part of the ventricle and between the terminal stria and fimbria hippocampi in the inferior horn. Synonym: fissura choroidea. (05 Mar 2000) |
| choroidal ring | A lightly pigmented crescent or ring adjacent to the optic disk. (05 Mar 2000) |
| choroidal vascular atrophy | Atrophy affecting either all choroidal vessels or only the choriocapillaris, occurring either diffusely or confined to the posterior pole of the eye. (05 Mar 2000) |
| choroidea | Synonym: choroid. Origin: see choroid (05 Mar 2000) |
| choroideraemia | An x chromosome-linked abnormality characterised by atrophy of the choroid and degeneration of the retinal pigment epithelium causing night blindness. (12 Dec 1998) |
| choroiditis | <pathology> Inflammation of the choroid, a membrane or coat of the eyeball. (27 Sep 1997) |
| choroido- | The choroid. (05 Mar 2000) |
| choroidocyclitis | Inflammation of the choroid coat and the ciliary body. Origin: choroido-+ G. Kyklos, circle (05 Mar 2000) |
| choroidopathy | Noninflammatory degeneration of the choroid. (05 Mar 2000) |
| choroidoretinitis | Inflammation of the retina extending to the choroid. Synonym: chorioretinitis, choroidoretinitis. Origin: retinochoroid + G. -itis, inflammation (05 Mar 2000) |
| choroidosis | An obsolete term for choroidopathy. (05 Mar 2000) |