How To Measure Your Pupillary Distance

While we have written about Pupillary Distance in our FAQs we feel like it deserve a little more consideration so here we go.

Pupillary Distance (PD) may sound like a scientific term straight out of a nerdy optometry manual, but fear not, we’re here to demystify it in a way that even your nan would appreciate. So, grab your cuppa and let’s dive into the fascinating world of PD.

What on Earth is Pupillary Distance?

Picture this: your eyes are the dynamic duo, like Batman and Robin, working together to conquer the visual challenges of everyday life. Pupillary Distance is the sidekick – it’s the measurement of the space between those two trusty peepers of yours. In essence, it’s the secret sauce that ensures your glasses are customised to suit your unique face. You can learn more about face shapes here?

Why Does It Matter?

Getting your Pupillary Distance right is crucial for optimal eyewear performance. Think of it as getting the right size tea cosy for your favourite mug – it’s all about that perfect fit. An accurate PD ensures that the focal point of your lenses aligns precisely with your pupils, giving you the crispest vision possible.

Measuring PD: The Quest for Accuracy

Now, let’s embark on the quest to measure your PD. It’s not as complicated as deciphering a cryptic crossword, we promise.

  1. Mirror, Mirror, on the Wall: Stand in front of a mirror with a cheeky grin on your face. This is your time to shine!
  2. Get a Ruler (or a Measuring Tape if You’re Feeling Fancy): Grab a ruler – the kind that doesn’t judge you for your questionable fashion choices.
  3. Focus, Dear Watson: Look straight into the mirror with your ruler at the ready. Position it horizontally along your brow line.
  4. Zero In on the Pupils: Focus on one eye (whichever you prefer – we’re not here to judge). Align the ‘zero’ mark of your ruler with the centre of that eye’s pupil.
  5. Two to Tango: Without losing focus, measure the distance from the centre of the first pupil to the centre of the second. Voila! You’ve got your PD.


Remove your glasses.
Hold any card with a magnetic stripe under your nose with the magnetic stripe facing outwards.
Take a selfie at arm’s length.

A Dash of British Humour:

Was that a bit boring? Well let’s lighten the mood quickly shall we.

Why did the glasses go to therapy? They couldn’t see eye to eye!

Remember, measuring PD is a piece of cake – or should we say, a slice of Victoria sponge? If in doubt, recruit a mate for assistance. It could turn into the highlight of your DIY optometry adventure.

The Importance of Accuracy:

While we’ve added a touch of whimsy to the process, accuracy is key. A well-measured PD ensures your glasses don’t end up wonky – unless you’re deliberately going for the eccentric professor look, in which case, more power to you!

So, there you have it – the lowdown on Pupillary Distance, sprinkled with British wit. Measure your PD with confidence, and next time someone asks, “What’s your PD?” you can nonchalantly reply, “Oh, just the distance between the windows to my soul – no biggie!” Cheers to crystal-clear vision and a good laugh along the way.

Ready to Buy Glasses Online

Hopefully you now have it all under control and you can start buying glasses on line. Start by visiting our home trial page and read how you can try 4 pairs of glasses risk free.