1. A highly vascular membrane in the eye between the retina and the sclera; a dark pigmentation minimizes the scattering of light inside the eye
   "The choroid plays a crucial role in supplying oxygen and nutrients to the outer layers of the retina";
   - choroid coat

Derived forms: choroids

Type of: membrane, tissue layer

Part of: eye, oculus [rare], optic

Encyclopedia: Choroid