How do you convert bifocal prescription to reading prescription?

Answer:
You add the part of the prescription that called the Add to the part called the Sphere. If your prescription contains Cylinder or Axis those numbers stay the same. Example: Your prescription is Sphere -1.00 Cyl -0.25 Axis 090 Add +2.00. Your reading prescription would be Sphere +1.00 Cyl -0.25 Axis 090 with no add.
First answer by Jessica.cox1. Last edit by Jessica.cox1. Contributor trust: 2 [recommend contributor recommended]. Question popularity: 1 [recommend question].

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