In some cases your vision correction doctor may forget to give you your PD (pupil distance). The best option will be to ask your doctor to measure it. It is part of your prescription and by law the doctor need to provide it. You may also use one of the ways below:
The easiest way.: 1) Wear any glasses with clear lenses. 2) Use a mirror or ask a friend or family member to mark your pupil location on the clear lenses using a dry erase marker. They must stand in front of you and be at the same height as yours. If you use a mirror make sure you stand 3ft from the mirror and your general stare is directed to the center of the glasses. 3) Using a ruler with millimeter range (print ruler), measure the distance between the two dots and that’s your PD
If you don’t have in your possession glasses with clear lenses, you may measure your PD using this method.
1)Print our mm roller; 2) Place the ruler horizontally on your nose bridge, zero slightly below your right eye; 3) Ask a friend or use your mirror to see the distance on the roller. The distance measured is your PD.
Although we don’t recommend this option. If you are unable to use the methods above you may use the general PD for: Women 62 and Men 64.