corneaListen to pronunciation(KOR-nee-uh)The transparent part of the eye that covers the iris and the pupil and allows light to enter the inside.Enlarge this image in new windowAnatomy of the eye showing the outside and inside of the eye, including the eyelid, pupil, sclera, iris, cornea, lens, ciliary body, retina, choroid, optic nerve, and vitreous humor. Search NCI's Dictionary of Cancer TermsStarts withContainsBrowse:ABCDEFGHIJKLMNOPQRSTUVWXYZ#