Sight

About how large is the human eye?

• basketball
• ping pong ball
• baseball
• soccer ball

What automatically shuts to help to protect the eye?

• iris
• eyelash
• eyelid
• lens

Which part is the colorful part of the eye?

• pupil
• iris
• cornea
• eyeball

The eye is about as big as a ping-pong ball and sits in a little hollow area (the eye socket) in the ______________.

• 
• 
• 

The lid helps keep the eye clean and moist by opening and shutting several times a minute. This is called ________________.

• breathing

• blinking

• pumping

The ____________ is the colorful part of the eye.

• iris (say: EYE-riss)

• cornea (say: KOR-nee-uh)

• sclera (say: SKLAIR-uh).

• pupil (say: PYOO-pul).

The ___________is the black circle in the center of the iris, which is really an opening in the iris, and it lets light enter the eye.

• cornea (say: KOR-nee-uh)

• sclera (say: SKLAIR-uh)

• iris (say: EYE-riss)

• pupil (say: PYOO-pul)

The ______________ takes the light the eye receives and changes it into nerve signals so the brain can understand what the eye is seeing.

• retina (say: RET-i-nuh)

• ciliary (say: SIL-ee-air-ee)

• say: VIH-tree-us)

• lacrimal (say: LAK-ruh-mul)

What would happen to your pupils if it's extremely bright outside?

• They would let a lot of light into your eyes

• They would expand and become very large

• They would contract and become very small

• They would close up completely

What might happen if the lens of your eye became damaged?

• Your eyes wouldn't be able to focus properly.

• You wouldn't be able to see in color.

• You wouldn't be able to see at night.

• All the images you saw would be upside-down.