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What are Cylinder (CYL) and AXIS values?

Both Cylinder and Axis values refer to an astigmatism in your prescription. Cylinder refers to the strength and Axis refers to the rotation of the cylindrical lens that runs on a plane of 1-180°. If you don’t have an astigmatism, or you have 00/Plano/DS written in the cylinder fields, then select “none” for both CYL and AXIS.

To learn more about prescription types and prescription values you can visit the following link

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