Pigmented eye parts are the colored parts of the eye, which are made up of two components: uveas and irises. Uveas, which is five letters long, is the layer of tissue that lies between the sclera and the retina. It contains blood vessels, muscles, and other structures that help to regulate the amount of light entering the eye. Iris, which is six letters long, is the colored part of the eye that surrounds the pupil and helps to control the amount of light entering the eye. Both uveas and irises are pigmented, meaning they contain melanin, which gives them their color.