2.4.2 visual perception

Question 1

Trace the path in which the light travels through the eye.

Answer 1

1. Cornea
2. Aqueous humor
3. Pupal
4. Lens
5. Vitreous humor
6. Retina

Question 2

What lens is used to correct being Hyperopic?

Answer 2

Convex lens

Question 3

What lens is used to correct being Myopic?

Answer 3

Concave lens

Question 4

What does it meant to be Hyperopic?

Answer 4

You have trouble seeing far away

Question 5

What does it mean to be Myopic?

Answer 5

You have trouble seeing up close

Question 6

What is the function of the Cornea?

Answer 6

To help protect the eye.

Question 7

What is the Cornea?

Answer 7

A tough clear, hard covering that protect the iris and the pupil.

Question 8

What is the function of the Pupil?

Answer 8

It allows light to enter the inner eye.

Question 9

What is the Pupil?

Answer 9

A dark circle in the center of your iris. It’s a hole that lets light into your inner eye.

Question 10

What is the Function of the Aqueous Humor?

Answer 10

Helps keep the cornea in place.

Question 11

What is the Aqueous Humor?

Answer 11

A clear fluid

Question 12

What is the Function of the Iris?

Answer 12

To control the amount of light let into the eye.

Question 13

What is the Iris?

Answer 13

A muscle

Question 14

What is the function of the lens?

Answer 14

To focus on an image close up or far away and displays the image on the retina.

Question 15

What is the lens?

Answer 15

A clear, flexible structure that makes an image on the retina.

Question 16

What is the function of the Vitreous humor?

Answer 16

To help give the eyeball it’s shape

Question 17

What is the Vitreous humor?

Answer 17

A thick, clear jelly

Question 18

What is the function of the Sclera?

Answer 18

To protect the eyeball

Question 19

What is the Sclera?

Answer 19

The Thick, tough, white outer covering of the eyeball

Question 20

What is the Retina?

Answer 20

The layer of light-sensitive cells at the back of the eye

Question 21

What is the function of the Retina?

Answer 21

To detect the images focused by the cornea and lens.

Question 22

What is the Blind spot?

Answer 22

The place where the optic nerve leaves the retina.

Question 23

What is not in the Blind spot?

Answer 23

There is no light sensitive cells.

Question 24

What is the optic nerve?

Answer 24

The bundle of nerve fibers.

Question 25

What is the function of the optic nerve?

Answer 25

To carry information from the retina to the brain.

Question 26

What are the two types of photoreceptors?

Answer 26

Rods and Cones

Question 27

What are Rods responsible for?

Answer 27

Low light levels. It picks up on black and white. (scotopic vision)

Question 28

What are cones responsible for?

Answer 28

color vision. Bright light levels

Question 29

What are the 3 types of Cones?

Answer 29

blue, green and red

Question 30

What is a astigmatism?

Answer 30

a problem in the way you focus light.

Question 31

astigmatism is cause by.

Answer 31

an irregular shaped cornea and lens

Question 32

What is Visual Acuity?

Answer 32

sharpness of vision, measured by the ability to discern letters or numbers at a given distance according to a fixed standard.

Question 33

What is the Fovea Centrails?

Answer 33

a small depression in the retina of the eye where visual acuity is highest. The center of the field of vision is focused in this region, where retinal cones are particularly concentrated.

Question 34

Where is the Fovea Centrails located?

Answer 34

In the Center of the eye.

Question 35

Draw and label the parts of the eye

Answer 35

(sorry didn't up-lode just google it)