The Eye

Question 1

What is the function of the retina?

Answer 1

Contains light receptors to capture the light and send electrical signals to the brain through the optic nerve.

Question 2

Function of the cornea

Answer 2

Refracts light as it enters the eye to focus on the retina.

Question 3

Function of the iris

Answer 3

Controls how much light enters the eye through the pupil.

Question 4

Function of the optic nerve

Answer 4

Carries impulses from the eye through the pupil

Question 5

Function of the ciliary muscles

Answer 5

Changes shape of lens to focus light on the retina

Question 6

Function of lens

Answer 6

Changes distance of sight by changing shape

Question 7

Function of suspensory ligament

Answer 7

Changes shape of lens to focus at different distances.

Question 8

What is myopia and how do you correct it?

Answer 8

Short sightedness, needs a concave lens to fix it.

Question 9

What is hyperopia and how do you correct it?

Answer 9

Long sightedness, needs a convex lens to correct it.

Question 10

How does laser eye surgery cure myopia / hyperopia

Answer 10

Reshapes the cornea so there is correct refraction of light.