| A | B |
|---|
| Binocular Vision | ability to see an object with both eyes at the same time |
| Iris | varies in color and controls the amount of light entering the eye |
| Cornea | Clear covering of iris and pupil that protects the eye from dust particles and foreign matter |
| Pupil | Opening in the eye through which light passes |
| Tears | Saline liquid that washes the eye and keeps the cornea moist |
| Eyelid | Large folds or flaps of skin that wipes the eye clean |
| Lens | Flexible disc shaped structure that focuses the image of an object |
| Eyeball Muscles | Six muscles that are attached to the side of the eye, they keep the two eyes focused on a single point |
| Aqueous Humor | Transparent liquid behind cornea that helps keep the corneas shape |
| Retina | The light-sensitive innermost layer of the eye, that contains cones and rods. The image is projected on the cones and rods in the retina and let us see colors and shades of black and white |
| Eyelashes | Hairs on the eyelid used to screen large objects from entering the eye |
