| A | B |
|---|
| lens | part of the eye that focuses (refracts) light into an image on the retina OR convex glass on a camera to focus light on the film |
| iris | colored part of the eye that controls the size of the pupils |
| pupil | pathway for the light to go through the eye; black part in center of eye |
| retina | absorbs the light at the back of the eye and sends the image to the brain |
| cornea | outer clear layer that protects the eye |
| optic nerve | carries the message from the retina to the brain |
| light ray | a straight-line narrow beam of light traveling out from its source |
| prism | glass that can break up white light into a rainbow of colors |
