How do you transpose reading Rx?
How do you transpose reading Rx? Transposing a Rx prescription is simply converting the prescription from minus cylinder notation to plus cylinder notation....Transposition Add the cylinder power to the sphere power to arrive at the new sphere power. Change the sign of the cylinder power. Add or subtract 90 from the axis. How do I convert my progressive Rx to reading? To convert a multi-focal prescription for single vision reading glasses, simply combine the Add number and the Spherical number. For example, if the Add were +2.25 and the OD-Sph was -0.50, the new OD-Sph for reading glasses would be...