Dictionary of Cancer Terms
View in Spanish: úvea
Uvea (YOO-vee-uh)
The middle layer of the wall of the eye. The uvea has 3 main parts: (1) the choroid (the tissue layer filled with blood vessels); (2) the ciliary body (the ring of muscle tissue that changes the size of the pupil and the shape of the lens); and (3) the iris (the colored part of the eye). Also called uveal tract.
Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.