Eyes and Vision

Which structure is an opening that regulates the amount of light that enters the eye?

• iris

• lens

• pupil

• cornea

The retina contains special sensitive cells. The ______ cells help us see colors and details.

• rod

• eyelashes

• cone

• iris

Tags

NGSS.MS-LS1-2

Name structure A

• Pupil

• Iris

• Cornea

• Retina

What is the function of the iris?

• helps refract light to retina

• clear, watery fluid

• thin structure that controls pupil

• fibers that hold the lens in place

What is the sclera?

• The white outer layer of the eyeball.

• The back of the eyeball

• The colored part of the eye.

• The hole that allows light into the eye.

Which letter shows the lens?

• C

• F

• D

• B

All of the following impact visual perception except...

• light

• shape

• temperature

• pattern

Tags

NGSS.MS-LS1-8

What is the main function of the cornea?

• To cover the eyeball

• To let light enter the eye

• To change shape

• To help the eye focus light

Which part of the eye allows light to enter?

• Pupil

• Lens

• Iris

• Retina

What is the function of the retina?

• To focus light rays

• To change the shape of the eye

• To convert light into nerve signals

• To cover the eyeball