How do I determine my PD (pupillary distance)?
The most precise way to obtain your PD is from your eye doctor. If your PD is not included with your prescription, we strongly recommend that you call your doctor and request your PD.
If your eye doctor cannot provide your PD and you can’t have it measured professionally, it is possible to measure it yourself or with the help of a friend.
What you will need:
Mirror or Friend
Make sure to measure your PD multiple times to ensure that it is accurate and consistent.
For adults the PD ranges from 54mm - 74mm
For children their PD ranges from 43mm - 53mm
Steps to Measuring your PD on your Own:
1. Stand 8 inches away from the mirror. (Facing the mirror)
2. While facing the mirror, with your face straight, hold the ruler against your brow.
3. Start by closing your right eye, and align the the ruler's zero to the center of your left pupil.
4. While keeping your face straight, close your left eye and open your right eye.
5. Read the mm line that lines up with the center of your right pupil. That number is your Pupillary Distance.
Measuring your PD with a friend:
If a friend or family member is helping you measure your PD, simply stand in front of them with both eyes open, and have them put the zero on the millimeter ruler over the center of one pupil and have then measure the distance to the center of the other pupil.
Things to Remember when Having Your Friend Measure your PD:
Have them sit or crouch down while they measure your PD, so that they are out of your field of vision, and you are looking straight ahead.
Try to keep your eyes as still as possible. When looking straight ahead, focus on an object that is 10 - 20 ft away above their head.
Try your hardest not to look at the person measuring your PD!
Once you’ve measured your PD and have your prescription in hand, ordering your Stanton Optical frames online is easy!