Measuring Your PD


Measure your PD

In some cases, your eye doctor or optician may forget to give you the PD (pupillary distance). The best option will be to ask your doctor to measure it. It is part of your prescription and the eye doctor needs to provide it. If this is not possible, you may use the methods listed below.

METHOD 1 – Using your glasses

  • Wear any glasses with clear lenses.
  • Use a mirror or ask a friend or family member to mark your pupil location on the lenses using a sharpie or 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 3 feet from the mirror and your gaze should be directed to the center of the glasses.
  • Using a ruler with a millimeter markings, measure the distance between the two dots and that’s your PD.  DOWNLOAD A RULER

METHOD 2 – Without glasses

If you don’t have in your possession glasses with clear lenses, you may measure your PD using this method.

  • Obtain a ruler with millimeter values
  • Place the ruler horizontally on your nose bridge, with the zero mark slightly below your right eye and centered below the middle of the pupil;
  • Ask a friend or use your mirror to measure the distance from the very center of the right pupil to the center of the left pupil. The distance measured is your PD.

METHOD 3 – Using average value

As a final alternative, although we don’t recommend this option, you may use these standard (average) PD values: Women 62 and Men 64. For low to moderate prescriptions, this should be okay but high prescriptions require an exact measurement.