| A | B |
| Ciliary muscles | adjust the shape of the lens |
| Cones | Responsible for color vision |
| Cornea | Curved eye surface; protected by tears |
| Eyelids | Provide protection from light, dust and trauma |
| Back of eyeball | Consists of retina, rods & cones |
| Iris | Colored part of the eye |
| Pupil | Opening in center of iris, regulating the amount of light coming into the eye |
| Retina | Nerve layer of the eye containing rods and cones |
| Rods | Function in dim light - responsible for night vision |
| Optic Nerve | Transports the electrical impulses to the brain |
| Lens | Changes shape to focus light onto the retina |