# PRACTICE FUN STUFF by rZ8E5J

VIEWS: 20 PAGES: 9

• pg 1
```									                               PRACTICE FUN STUFF
Putting Prescriptions on the Optical Cross

Optical Cross

Put the following Rx on the Optical Cross

-2.00 -1.00 x 080                                  -3.00 – 2.50 x 107

-1.00- 3.00 x 095                                  -5.00 -2.00 x 015

+2.00 -3.00 x 010                                  -1.00 +3.00 x002

1
Put the following Rx on the Optical Cross

+3.50 -1.00 x 096                               -3.25 -0.25 x 110

-3.25 -0.75 x080                                -1.00 -1.00 x 080

-2.50 Sphere                                    -3.00 -1.00 x 120

+ 2.00 -1.00 x 080                              -3.50 -2.00 x 030

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More Practice
Taking Prescriptions off the Optical Cross

Take the following prescriptions off the optical cross in minus cylinder form

090                                       026

-2.00                          180              -1.00                 116

-4.00                                       -5.00

090
+3.00                026

+2.00                          180

116
+1.00
-1.00

100

-4.00                  069

-1.00                 010

159
-2.25

-1.00

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More Practice
Taking Prescriptions off the Optical Cross

Take the following prescriptions off the optical cross in PLUS cylinder form

090                                       026

-2.00                          180              -3.00                 116

-3.00                                       -3.00

090
+3.00                026

+2.00                          180

116
+1.50

+4.00

100

-3.75                  069

-1.00                 010

159
-2.25

-4.00

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Spherical Equivalent
More Practice

Give the spherical equivalent to the following prescripts

-2.00 -1.00 x 080                            Answer ___________________________

-1.00 -2.00 x 010                            Answer ___________________________

-3.00 – 0.50 x 070                           Answer ___________________________

+3.00- 1.00 x 060                            Answer ___________________________

+2.00 -2.00 x 050                            Answer ___________________________

-4.00 -1.00 x 020                            Answer ___________________________

-3.50 – 2.00 x 180                           Answer ___________________________

+1.00 -3.00 x 020                            Answer ___________________________

-2.00 -0.50 x 168                            Answer ___________________________

-2.00 -0.50 x 145                            Answer ___________________________

-3.00 -1.00 x 080                            Answer ___________________________

+2.25 -1.00 x 011                            Answer ___________________________

-1.50 -0.50 x 021                            Answer ___________________________

5
More Practice
Converting Multifocals

Transpose the following Rx to Near Vision Only aka NVO, SVN, reading glasses

-2.00 -1.00 x 080                            -3.00 -1.00 x 090
-1.50 -2.00 x 180                            -2.00 -0.75 x 180
+3.00 OU                                     +2.25 OU

________________                            ________________

-4.00 -0.25 x 090                            -1.00 – 0.50 x 010
-1.00 -0.50 x 098                            -2.00 -0.75 x 100
+2.00 OU                                     +1.25 OU

________________                            ________________

+2.25 -1.00 x 180                            +2.50 -1.00 x 090
+0.50 -1.25 x 165                            +1.00 -0.75 x 180
+1.00 OU                                     +2.25 OU

________________                             ________________
-2.00 -1.00 x 090
+1.00 -2.00 x 065                            -1.00 -0.75 x 180
+0.50 -1.00 x 050                            +1.75 OU
+1.50 OU with 50% int
________________                            ________________

6
More Practice
Converting Multifocals

Transpose the following Rx from a Multifocal to a Distance Vision Rx aka SVD, DVO,
distance glasses

-3.00 -1.00 x 090
-1.00 -1.00 x 090                              -0.50 -0.50 x 180
-2.00 -0.75 x 180                              +2.25 OU
+1.00 OU
________________                               ________________
________________

+1.00 -1.00 x 030
-2.50 -1.00 x 065                            +0.50 -0.75 x 110
-3.00 -0.75 x 180                            +1.50 OU
+0.75 OU
________________                             ________________
________________

11.25 -1.00 x 090
-3.00 – 0.75 x 090                          -2.00 -0.75 x 180
-1.75 - 0.75 x 180                          +2.25 OU
+2.25 OU
________________                            ________________
________________

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MORE FUN PRACTICE
Transposition

Transpose the following Rx from plus cylinder form to minus cylinder form.
- 0.50 +1.00 x 080
-2.00 +1.00 x 090

-1.00 +1.50 x 010                              -1.00 +3.00 x 070

-3.00 +2.00 x 095
- 0.50 +2.00 x 145
+1.25 +1.00 x 020
- 5.00 +3.00 x 088
+1.00 +0.50 x 164
- 1.50 +2.00 x 004
-2.50 +1.00 x 030
- 2.50 +3.00 x 103

-0.75 +1.00 x 178                              -1.50 +2.00 x 169

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MORE FUN PRACTICE
TRANSPOSITION

Convert the following prescription from minus cylinder to plus cylinder format

-1.00 -1.00 x 090                              -1.00 -2.00 x 080

-1.00 -1.50 x 160                              - 0.50 -2.00 x 008

- 5.00 -3.00 x 088
-3.00 -1.50 x 095
- 1.50 -1.25 x 004
+1.25 -1.00 x 020
- 2.50 -1.50 x 103
-1.00 -0.50 x 162