6.0-4: Eye Research #2

Where does light enter the eye?

• pupil

• cornea

• iris

• retina

Light projects onto the photo receptors of the ______.

• cornea

• pupil

• iris

• retina

What connects the eye and brain?

• lens

• vitreous humor

• retina

• optic nerve

The _______ and _______ regulate the entry of light into the eye and help us focus.

• pupil and iris

• cones and rods

• cornea and retina

• pupil and lens

_____ contain potent natural disinfectants to keep bacteria away.

• eyelids

• eyelashes

• tears