Transpose Rx

Use this calculator to convert any Rx between plus cylinder form and minus cylinder form.

Click here to see how to transpose an Rx manually.

Enter the Rx* and click the appropriate button to convert the Rx to plus or minus cylinder form.

  Sphere Cylinder Axis  

* This calculation does not affect the prism or add components of the Rx, the prism and add components in the original Rx would be included as part of the above transposed Rx.