Practice Questions

1.Name the part of the eye that carries electrical impulses from the retina to the brain.

Optic nerve

2.Which part of the eye protects the eyeball and helps it maintain its shape?

Sclera

3.Explain how the cornea and lens work together to focus light on the retina.

Cornea bends / refracts light 

Lens changes shape to focus light 

Light is focused on the retina