Quiz 5

Question 1

The two ways a prism must be expressed in relationship to a prescription are:

Answer 1

A. prism axis, prism decentration
B. prism dioptric power, base direction *
C. amount of decentration, power of lens
D. power in the 90th meridian, base direction

Question 2

The direction of the base direction for prisms is expressed in degrees from ______ to _______.

Answer 2

A. 0-360 *
B. 0-180
C. 0-270
D. 90-180

Question 3

Prism base 45 degrees before the right eye is the same as prism base:

Answer 3

A. Up and out
B. Up and in *
C. Down and out
D. Down and in
E. Cannot be determined

Question 4

The 2nd quadrant, in reference to meridian notation, has degrees ranging from:

Answer 4

A. 180-270
B. 0-90
C. 90-180 *
D. 270-360

Question 5

When light strikes a prism, it will deviate toward the _____ while the image will be displaced toward the ______.

Answer 5

A. Top/Bottom
B. Bottom/Top
C. Apex/Base
D. Base/Apex *

Question 6

Excessive prism base down will cause the client to see:

Answer 6

A. The floor appears as if concave
B. As if they are standing in a hole and walking uphill
C. Vertical objects as being taller than they are
D. All of the above *

Question 7

Excessive prism base up will cause the client to see ______.

Answer 7

A. The floor appears convex *
B. The floor appears concave
C. Vertical objects as being taller than they are
D. All of the above

Question 8

Find the resultant prism (R and degree) from the following information:
OS: +1.00 -2.00 X 170
2.00 BI and 3.00 BU

Answer 8

A. 4.2 ^ @ 56.3 degrees
B. 4.2 ^ @ 123.7 degrees
C. 3.6 ^ @ 56.3 degrees
D. 3.6 ^ @ 123.7 degrees *

Question 9

Resolve the following prism (Find X and Y components):
OD: -3.00 -1.00 X 030
5.00 @ 200

Answer 9

A. X = 3.6 ^ BO / Y = 4.69 ^ BD
B. X = 4.69 ^ BO / Y = 1.7 ^ BD *
C. X = 4.69 ^ BI / Y = 1.7 ^ BU
D. X = 3.6 ^ BI / Y = 4.69 BU

Question 10

Prism can be measured and expressed in prism diopters, prism centrads and prism millimeters.

Answer 10

True

False *