232 lab 2

Question 1

Answer 1

Question 2

Answer 2

Question 3

Answer 3

Question 4

Answer 4

Question 5

Answer 5

Question 6

Answer 6

Question 7

Answer 7

Question 8

Answer 8

Question 9

Answer 9

Question 10

Answer 10

Question 11

Answer 11

Question 12

Answer 12

Question 13

Answer 13

Question 14

Answer 14

Question 15

Answer 15

Question 16

Answer 16

Question 17

Refracted

Answer 17

When light rays pass from one medium to another, their speed changes, and rays are bent

Question 18

Emmetropic

Answer 18

A normal eye that is able accommodate properly

Question 19

Astigmatism

Answer 19

Irregularities in the curvatures of the lens and/or the cornea lead to a blurred vision problem

Question 20

Presbyopia

Answer 20

When the elasticity of the lens decreases dramatically with age resulting in difficulty in focusing for bear or close vision, especially when reading

Question 21

Visual acuity

Answer 21

The sharpness of vision. 20/20 (you are the top number and the average “normal” person is the bottom) 20/15 or 20/80

Question 22

Testing for color blindness

Answer 22

Ishihara’s color plates are designed to test for deficiencies in color photoreceptors cells-the cones.

Question 23

Depth perception

Answer 23

The ability to see in three dimensional vision

Question 24

Convergence

Answer 24

The extrinsic muscles (which are the recurs and the oblique muscles) make it possible to to keep moving objects focused on the fovea centralis. They are responsible for the convergence (the movement of the eye to allow near vision)

Question 25

Answer 25

Question 26

Answer 26

Question 27

Answer 27

Question 28

Answer 28

Question 29

Answer 29

Question 30

Answer 30

Question 31

Answer 31

Question 32

Answer 32

Question 33

Answer 33

Question 34

Answer 34

Question 35

Answer 35

Question 36

Answer 36

Question 37

Answer 37