The Eye and Vision

What part of your eye sends the messages to and from your brain?

• retina
• optic nerve
• iris
• vitreous humor

What is the pupil?

• Dot
• Hole
• Muscle
• Organ

What part of your eye is a muscle?

• iris
• sclera
• pupil
• retina

What two parts of the eye work as lenses?

• iris and lens

• retina and lens

• cornea and lens

• aqueous humor and lens

What is the job of the pupil?

• to let light enter the eye
• carry signals from the retina to the brain
• protect the eye
• to see colors

What is the job of the lens?

• To protect the eye
• to open or shrink the pupil
• let light into the eye
• focuses the light onto the retina at the back of the eye

The innermost sensory layer of the eye that contains photoreceptors 

• Choroid
• Retina
• Sclera
• Cornea

What works as the screen in the eye, where the image lands?

• cornea

• lens

• retina

• optic nerve

Photoreceptors that detect color are called..

• Cones
• Rods

Photoreceptors that detect grey tones in low light are called...

• Rods
• Cones