How do I use the MyReaderNumber app to order computer glasses?

Normally, the calculation that is used for creating computer glasses is SPH + 1/2(NV ADD+). For example, if your measurements were written like this:

O.D.= SPH-1.00D CYL-0.50D AXIS 90 ADD +2.00D

O.S.= SPH-1.25D CYL-0.25D AXIS 75 ADD +2.00D

Then to convert these measurements to a pair of computer glasses, the result will look like:

O.D.= SPH-0.00D CYL-0.50D AXIS 90

O.S.= SPH-0.25D CYL-0.25D AXIS 75

The difference between the example above and the MyReaderNumber app is that it will calculate the ADD required for computer glasses based on the distance you are measuring within the app. Since you will receive the computer ADD value within the app, just add that value to the SPH of your current measurements. For example, if we use the measurements above and the MRN app gives us a computer ADD of +1.25D then the computer glasses would look like this:

O.D.= SPH +0.25D (-1.00D + 1.25D) CYL-0.50D AXIS 90

O.S.= SPH 0.00D (-1.25D + 1.25D) CYL-0.25D AXIS 75

If you require further assistance in calculating computer glasses, please contact our support team.