PUPIL DISTANCE Measurement
We need your PD (Pupil Distance) measurement to accurately make your prescription.
You can call your eye doctor for this measurement, or you can measure your own PD using a mirror and a millimeter ruler. Your prescription does not typically show the pupil distance measurement.
To measure the PD yourself, place the ruler flat against your forehead and with your right eye closed, line up the zero on the ruler with the center of your left pupil.
With your left eye closed, take a reading of the ruler at the center of your right pupil.
If you have difficulty seeing what you are doing, then use a magnifying mirror. If it is easier, line up the outside of the iris of one eye with the inside of the iris of the other eye and use that measurement.
If you enter incorrect prescription information such as an inaccurate papillary distance measurement, you may not be able to see well with your new glasses. We cannot be responsible for mistakes in prescription information provided by you or your optometrist or ophthalmologist. We guarantee that your prescription safety glasses will be made exactly to the specifications that you provide.