FreeShipping on Orders Over $70
In this guide, we’ll show you step by step how to measure your PD at home with just a mirror, a ruler, or even your smartphone.
When ordering prescription glasses online, one key measurement you need is your Pupillary Distance (PD).
This ensures the optical center of your lenses aligns perfectly with your eyes, giving you sharp and comfortable vision.
Pupillary Distance (PD) is the measurement (in millimeters) between the centers of your pupils.
Correct PD ensures your lenses match the natural focus of your eyes.
The best and most reliable way to measure PD is with a digital pupillometer (PD meter) at a local optical shop or optometry clinic.
This tool is designed specifically for precise PD measurement and can detect both single PD and dual PD values.
👉 Recommendation: If possible, have your PD measured once by a professional and keep it on record for future online orders.
If you can’t visit a store, you can measure PD yourself at home:
That number is your PD.
Sometimes it’s easier with assistance:
Some eyewear brands and apps offer PD measurement using your phone camera.
While not as precise as a professional PD meter, these apps can be helpful if you don’t have a ruler handy.
👉 Recommendation: EyeMeasure APP
👉 Dual PD is more accurate, especially for stronger prescriptions.
Getting your PD right is crucial for comfortable and clear vision.
If possible, let a professional measure it with a PD meter.
If not, use one of the at-home methods to ensure your glasses fit perfectly.