EYES 2

Question 1

Which two structures refract light entering the eye?

Answer 1

Cornea and lens

Question 2

When light passes into the eye, where on the retina should the light be focused?

Answer 2

Fovea

Question 3

What shape must the lens be to see a nearby object?

Answer 3

Short and fat

Question 4

True or false? The ciliary muscle can contract or relax?

Answer 4

True

Question 5

Can the suspensory ligament contract and relax?

Answer 5

No

Question 6

How do ciliary muscles and suspensory ligaments achieve focus on nearby object?

Answer 6

Suspensory ligaments slacken, ciliary muscles contract

Question 7

What happens to ciliary muscles, lens and suspensory ligaments when focusing on an object that is far away?

Answer 7

1. Lens is pulled tall and thin
2. Ciliary muscles relax
3. Suspensory ligaments are pulled taut

Question 8

What does long sighted mean?

Answer 8

Eye cannot focus on nearby objects - does not refract enough light

Question 9

What type of lens is used to treat hyperopia?

Answer 9

Convex lens

Question 10

What type of lens is used to treat myopia?

Answer 10

Concave lens