The eye is a complex organ composed of many parts, each of which has a specific purpose. The irides (6 letters) are the colored part of the eye, and the uveas (5 letters) are the middle layer of the eye. The retinas (7 letters) are the light-sensitive layers at the back of the eye, and the corneas (7 letters) are the transparent outer layer of the eye. The retinae (7 letters) are the innermost layer of the eye, and the irises (6 letters) are the colored part of the eye. The rods (4 letters) are the light-sensitive cells in the retina, and the LENSES (6 letters) are the transparent structures that focus light onto the retina. The whites (6 letters) are the sclera, the tough outer layer of the eye, and the LIDS (4 letters) are the movable eyelids that protect the eye. Finally, the pupils (6 letters) are the dark centers of the eyes that control the amount of light entering the eye.