Engage Learning Magazine Understand The Eye with Engage Learning Magazine | Page 3

@engagelearningmag How Your Eye Works The iris is the coloured part of your eye. It has muscles that open and close your pupil. An image forms on cells on your retina. The cells, called rods and cones, turn light into messages. The pupil is the hole in the centre of your iris that lets light into your eye. The cornea acts like a windshield, protecting your eye. The lens focuses light on to your retina. The optic nerve carries messages to your brain.