There is no PD value in my prescription, and I need bifocal eyeglasses. Online customer service said PD is very important for bifocal or progressive glasses, and I can measure the PD myself. Could someone tell me how to measure my PD?

Place a regular ruler on the bridge of your nose. Have a friend face you about arms length away. Have your friend measure the distance between the center of your pupils (the black dots in the middle of your eyes). Or you can do it yourself simply by looking in the mirror. If you need your glasses on to do this, you can draw dots on the lenses where your pupils are (using a magic marker or highlighter); then take the glasses off and measure the distance between them. Reapeat the measurement 3 times for accuracy.

Hi, Alexander! You want get your pd yourself??? I think that’s not a good choice. I am agree with the methods what barton suggest but that’s not the best suggest! Pd value is a important value for your reading glasses or bifocal. You need to check it by your doctor or optimist. Not your self!!