The light sensitive layer within the eye that converts images into electrical signals.

The hole located in the iris that changes size to allow different amounts of light into the inner eye.

The colorful structure of the eye that changes the shape of the pupil to allow for different amounts of light to enter the inner eye.

A muscle that controls the shape of the lens to better focus the light onto the retina of the inner eye.

The transparent orb within the eye that refracts light to the retina of the eye.

The nerve at the back of the eye that transports electric signals to the brain.

White outer covering of the eye that provides protection

This acts a barrier against dirt, germs, and other particles that can harm the eye. The structure plays a key role in vision by helping focus the light comes into the eye.

This regulates the amount of light that enters your eye. It contracts and expands, opening and closing the pupil, in response to the brightness of surrounding ling. The structure of the eye helps protect the sensitive retina.

This structure is responsible for the sharp, straight-ahead vision that is used for seeing fine detail, reading, driving, and recognizing faces.

What is the main purpose of the pupil?

The iris is behind the cornea. State true or false.

The optic nerve is the part of the eye that gets on the nerves. State true or false.

What is the best definition of the retina?

Which part of the eye does 20% of the focusing?

The pupil _______ in bright light.

The retina absorbs light and changes it into electrical signals. Is this statement True or False??

The cornea does ________ percent of the focusing of images.

If you scratch your eye you probably scratch the cornea. True or false?