The eye

What is the role of the lens in vision?

• To control the amount of light entering the eye
• To protect the eye from injury
• To carry impulses between the eye and the brain
• To refract light onto the retina

What is the main function of the sclera?

• To protect the eye from injury
• To produce color vision
• To carry impulses between the eye and the brain
• To control the amount of light entering the eye

What happens to the lens when focusing on a distant object?

• It becomes thinner
• It becomes thicker
• It stays the same
• It moves to the side

What controls the amount of light entering the eye?

• Retina
• Lens
• Iris
• Cornea

What is the function of the optic nerve?

• To refract light
• To control the amount of light entering the eye
• To carry impulses between the eye and the brain
• To produce color vision

What happens to the lens when focusing on a near object?

• It becomes thinner
• It becomes thicker
• It stays the same
• It moves to the side

Which part of the eye contains the light receptors?

• Cornea
• Iris
• Lens
• Retina

What are the two main types of light receptors in the retina?

• Lens and optic nerve
• Rods and cones
• Cornea and iris
• Sclera and pupil

What is the role of cone cells in vision?

• To protect the eye from injury
• To see in dim light
• To control the amount of light entering the eye
• To produce color vision

What is the role of the muscles of the iris in controlling the size of the pupil?

• To produce color vision
• To control the amount of light entering the eye
• To protect the eye from injury
• To carry impulses between the eye and the brain