CKLA U3 L10 Chapter 7: Eyes and Vision

The pupil gets bigger and smaller because it is tired.

The pupil gets bigger and smaller to be able to see.

The pupil gets bigger to let more light in and smaller to let less light in.

The pupil gets bigger to see farther and smaller to see closer.

The cornea is the part of the eye that focuses light.

The cornea helps protect the eye from dirt and germs.

The cornea gives us the ability to see.

The cornea sends messages to the brain.

The nerves in the retina send messages to the brain down a nerve called the optic nerve.

The retina helps protect the eye from dirt and germs.

The retina helps the eye move.

The retina is the part of the eye that focuses light.

Rods and cones help protect the eye from dirt and germs.

Rods and cones can be different colors.

Rods and cones expand to let more light in and get smaller to let less light in.

Rods and cones send information to the brain using the optic nerve.