Understanding Your Eyes

The clear cover at the front of the eye that lets light in and also bends the light rays

Coloured ring that opens and closes to adjust the level of light entering the eye

Hole in the Iris through which light enters the eye

Clear structure within the eye that further focuses light rays onto the retina

Lining at the back of eye that receives images focused by the lens

Nerve at the back of eye that carries images from the retina to the brain

These muscles change the shape of the lens to focus images on the retina