Another NEW Mandela effect regarding the human anatomy: the limbal ring | A limbal ring is a dark circle or ring around the iris of the eye. It is a dark-colored manifestation of the corneal limbus resulting from optical properties of the region. Limbal rings become less pronounced with age, thus darker rings imply youthfulness and are considered attractive. Optical, Eye Ring, Quantum, Iris Eye, Dark Circles, Eye, New Mandela Effect, Mandela Effect, Iris