There is a theory in alternative medicine that the color of the irises and the health of internal organs are connected. This direction in medicine is called iridology but since it doesn’t have a sufficient evidence base, it is considered pseudoscientific. But Dr. Robert Morse, a health expert who’s had a quarter of a million patients, believes that the outer quadrant of the eye is connected with the health of the brain while the inner circle is connected with the digestive system. He says that plenty of fruits and vegetable in your diet can change the color of your eyes and he even created a series of videos dedicated to his research.