When ordering glasses online, one measurement that often seems intimidating is pupillary distance (PD). But fear not! Knowing your PD is simpler than it seems, and it’s a key factor in ensuring your designer prescription glasses provide optimal vision correction. At Azimuth by New Eyes, we want to make sure your eyewear experience is as smooth and successful as possible, so let's dive into how you can measure your PD at home and why it should never stop you from getting the stylish, affordable glasses you need.
What Is Pupillary Distance?
PD is the distance between the centers of your pupils, measured in millimeters. This measurement ensures that the lenses in your glasses are aligned with the center of your pupils, allowing you to see through the optical sweet spot of the lens. An accurate PD is essential for clear, focused vision and preventing eye strain, particularly with higher prescriptions.
Why Do You Need to Measure PD?
Opticians traditionally measure your PD when fitting glasses in-store, but when buying online, you might need to provide this measurement yourself. Having the correct PD is especially important for progressive or bifocal lenses, as well as for stronger prescriptions. However, even if your prescription is mild, accurate PD ensures maximum comfort and visual clarity in your new eyewear.
How to Measure Your Pupillary Distance at Home
Measuring your PD at home is easy and can be done with just a few items:
- A millimeter ruler
- A mirror
- A friend or helper (optional, but helpful)
Here’s a simple step-by-step guide:
- Stand about 8-12 inches from a mirror: Ensure that you're facing the mirror straight on.
- Place the ruler against the bridge of your nose: Position the ruler horizontally so that the millimeter side is facing up.
- Measure from pupil to pupil: Close your right eye and align the 0 mm mark on the ruler with the center of your left pupil. Then, keeping the ruler steady, open your right eye and close your left eye, and read the measurement at the center of your right pupil. This is your PD.
- Repeat for accuracy: To be sure you’ve measured correctly, repeat the process two or three times. The number should typically fall between 54-74 mm for adults.
Alternatively, many online retailers offer tools like digital PD rulers or apps that help measure PD using your phone's camera. Check out our parent New Eye’s page on where you can download PD apps.
Should PD Stop You from Ordering Online?
Absolutely not! PD is just one of many measurements that ensure your glasses fit well and perform optimally. Online retailers make it easier than ever to measure PD accurately, and most glasses come with step-by-step guides and tools to help you through the process. Even better, many optometrists will provide your PD on request if it’s not already on your prescription.
By taking a few minutes to measure your PD at home, you can confidently shop for designer glasses online and enjoy the convenience of having stylish, affordable eyewear delivered right to your door.
Conclusion
Don’t let the thought of measuring your PD hold you back from ordering glasses online. With a simple ruler, a mirror, and a bit of patience, you can measure your PD accurately and be well on your way to finding the perfect pair of eyeglasses. At Azimuth by New Eyes, we’re committed to helping you see better and look great, whether you’re measuring your PD for the first time or a seasoned pro.