The term CORNEA NEIGHBOR is composed of two crossword solutions, IRIS (4 letters) and SCLERA (6 letters). The IRIS is the colored part of the eye that surrounds the pupil and controls the amount of light entering the eye. The sclera is the white outer layer of the eye that covers the entire eyeball and provides it with shape and protection. Together, the IRIS and sclera form the cornea neighbor, which is the area of the eye that surrounds the cornea.