BT Auge Nr. 42-29422056
by PASIEKA - © Corbis. All Rights Reserved. - © PASIEKA/Science Photo Library/Corbis
Eye, iris
Eye. Computer artwork of a close-up of the iris and pupil of an eye. The iris, a coloured muscular ring, regulates the amount of light that enters the eye through the pupil (black). . --- Image by © PASIEKA/Science Photo Library/Corbis