Lens (vision)
 Light from a distant object and light from a near object being brought to a focus by changing the curvature of the lens. |
The lens is clear and flexible; its curvature is controlled by muscles. By changing the curvature of the lens, the eye can focus at different "depths of field".
| Sensory system - Visual system | Edit |
| Eye - Optic nerve - Optic chiasm - Lateral geniculate nucleus - Visual cortex |