To better service you, please click here to enter your prescription before selecting lenses for your frames.

What is a PD Measurement?

PD stands for Pupillary Distance.  It is the distance measured in mm between the center of your left pupil and the center of your right pupil.   When adding prescription lenses to frames, it is important to know exactly where the pupils are located within the frame.  If offset, you will have distortion and not have a good fit with your prescription lenses.

You can either have your optometrist provide your PD, measure it yourself, or come into our Brookfield office to meet with one of our optical specialists.

To measure your PD, click here to view/print the PD Measurement tool.

Instructions for Measuring Your Pupillary Distance (PD)
  1. Click the PD Measurement link above.
  2. Set your printer to 100% or Full and print the PD Ruler.
  3. Place a credit card in the box provided on the printed sheet.
  4. If the credit card fits in the box the printer is set correctly. If not go back and set the printing scale to 100% or Full and reprint the PD Ruler.
  5. Fold along the dashed line.
  6. You can use a friend to measure your PD or measure yourself with a mirror.
  7. Friend Method:
    1. Look straight ahead 8 inches from your friend.
    2. Have the friend hold the ruler to your brow.
    3. Line up the zero with the center of you right pupil.
    4. The measurement at the center of your left pupil is your single PD.
    5. Take several measurements for accuracy, removing the ruler from your brow between measurements.
  8. Mirror Method
    1. Look straight ahead 8 inches from a mirror.
    2. Hold the ruler to your brow and close your right eye.
    3. Align the zero with the center of your left pupil.
    4. Open your right eye and close your left eye.
    5. Look straight ahead and read the millimeter line that is in the center of your right pupil, this is your single PD.
    6. Take several measurements for accuracy, removing the ruler from your brow between measurements.