Quiz 3

Question 1

Transpose the following into cross cylinder form:

-1.25 -0.37 X 180

Answer 1

A. -1.25 X 090, -1.62 X 090
B. -1.62 X 090, -1.25 X 180
C. -1.25 X 180, -1.62 X 090
D. -1.25 X 090, -1.62 X 180 *

Question 2

Transpose the following in cross cylinder form:

-1.00 +1.12 X 045

Answer 2

A. -0.12 X 135, -1.00 X 135
B. -1.00 X 045, -0.12 X 045
C. -1.00 X 135, +0.12 X 045 *
D. +0.12 -1.12 X 135

Question 3

Combine the following cross cylinders and write them in both plus and minus cylinder:

+0.25 +1.00 X 090 {} -0.50 +1.00 X 180

Answer 3

A. +0.75 -0.75 X 090, plano +0.75 X 180
B. +0.75 sphere *
C. -1.75 sphere
D. -0.75 +0.75 X 180, plano -0.75 X 090

Question 4

Combine the following cross cylinders and write them in both plus and minus cylinder:

+1.00 X 035 {} -2.00 X 035

Answer 4

A. plano +1.00 X 035, -1.00 -1.00 X 125
B. plano -1.00 145, -1.00 +1.00 X 035
C. plano -1.00 X 035, -1.00 +1.00 X 125 *
D. plano +1.00 X 145, -1.00 +1.00 X 125

Question 5

Use a diagram and follow the steps provided to combine the following oblique cylinders:

-2.50 X 065 {} -3.00 X 045

Answer 5

A. -2.50 -0.50 X 065
B. -2.50 -3.00 X 045
C. +0.12 +5.12 X 079
D. -0.12 -5.25 X 054 *