Transposing Prescription Flashcards

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Questions and Answers

What is the result of the equation -0.25 + 1.00 x 060?

-1.00
-0.25
+0.75-1.00x150
+0.75 (correct)

What is the sum of sphere and cylinder power -0.25 and 1.00?

+0.75

What is the change in cylinder power if the original power is -1.00?

-1.00

The result of adjusting the axis by 90 degrees from 060 is ___

<p>150</p> Signup and view all the answers

What is the transposed RX for +0.75 and -1.00 x 150?

<p>+0.75 -1.00 x 150</p> Signup and view all the answers

Study Notes

Prescription Transposition Summary

Example prescription format: -0.25 + 1.00 x 060 indicates sphere and cylinder values.
To combine sphere and cylinder powers: Add the numerical values. In this case, -0.25 + 1.00 results in +0.75.
Changing cylinder power to minus format involves a sign change, turning +1.00 into -1.00.
Adjusting the axis by 90 degrees means adding 90 to the original axis. For an axis of 060, it becomes 150. If the axis is greater than 90, subtract 90.
The transposed prescription format combines the adjusted values: The final transposed RX is +0.75 -1.00 x 150.

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Description

This quiz covers essential concepts in transposing prescription eyewear. Each card focuses on specific calculations and adjustments in lens prescriptions. Perfect for students and professionals in optometry and ophthalmology.