Once you’ve found your favourite frame, it’s time to measure your Pupillary Distance (PD), or the distance in millimetres between the centres of your pupils. Knowing your PD helps us craft your lenses to suit your eyes, and makes sure that you’re always looking through the right part of your lenses. 

In other words, it’s one extra step to make sure that your new specs are, well, properly specced.

If your glasses aren’t tailored to your PD, they could cause anything from eye strain and poor vision to fatigue and headaches. The higher your prescription, the worse the potential effects of an incorrect PD.

To measure your PD, simply:

  1. Order your new pair of York & Onos glasses.
  2. Check your inbox for your order confirmation and an email containing our printable PD measurement tool.
  3. Print the measurement tool and, holding it just in front of your eyes, align the ‘0’ marking with the centre of your right eye. You can do this step in front of a mirror, or get a friend or family member to help you.
  4. Then, find the marking on the tool that aligns with the centre of your left eye. This measurement is your PD.
  5. To find your PD for each eye, divide the measurement you took in Step 4 in half. For example, if your PD is 58mm, the PD of your left and right eyes will be 29mm each.**
  6. Enter both measurements in the provided field, email them back to us, and we’ll start crafting your lenses!

**Please note that the average PD ranges between 58mm and 68mm. If yours falls outside this range, or if you have a prescription that is greater than +/-6 SPH, contact us and we’ll be happy to assist.