How to Measure Your Pupillary Distance (PD)?

Finding the right frame size is an important part of buying eyewear online. Luckily, it's also super simple! Below is a helpful guide to understanding pupillary distance measurements when looking for your next pair of eyeglasses or sunglasses.

What is pupillary distance?

Pupillary distance (PD) measured, in millimeters, is the distance between the centers of your pupils and is used to align the center of your pupils with the center of your recommended lenses accurately in your frames. Your optician will usually measure your PD, or you can use a digital PD ruler to measure it quickly online.

Your PD is very important for fitting your lenses to achieve vision accuracy. In general, this number will be provided on your prescription after the eye exam; if not, you can also get it measured at home. All you need is a friend or a mirror and a ruler.

Why is it important?

Every set of prescription lenses has an “optical center”, which should align with where you look through the lens. Pupillary distance is used to determine this and should be as accurate as possible.

What is single and dual PD?

How do you calculate near PD for reading glasses?

Subtract 3 mm from your distance PD.
For example, if your distance PD is 63mm, then your near PD is 60mm.

If you use dual PD to calculate near PD, then subtract 1.5mm from each eye’s measurement.
For example, if your dual PD is 33/31mm, then your near PD would be 31.5/29.5mm.

Additional Notes:

The average PD is between 54mm and 78mm.
For those requiring progressive lenses, we strongly recommend you get this information from your optician to ensure the accuracy of your glasses.
Your PD may be written in three ways:
- PD (OU), written as "64", means the Binocular PD, which is for both eyes.
- PD (OD), means the Monocular PD for the right eye, PD (OS), means the Monocular PD for the left eye. A Monocular OD is written as two numbers, for example "32/30", "32" represents the PD for the right eye, and "30" for the left eye.
- Sometimes PD is written as "62/59" or they are labeled "Far" and "Near". Your PD is usually measured for distance vision, which is "Far PD", or "62" in this example. For reading glasses, doctors measure your "Near PD" or "59" in the example.
Always enter your "Far PD" for distance vision eyeglasses, and enter your "Near PD" for your reading glasses only. For most people, the difference between Far PD and Near PD is about 2-3mm.

Check out our various frame styles to discover which size and shape looks best on you. Once you find your favorite frames, use our lens index guide, which is in the detail of every frame you selected in our catalog to help you decide which lenses to get.

At Reflexa, we offer a 12-month warranty covering any manufacturer defects. If you experience any issues, simply bring your glasses to any Courts Optical location. As our trusted partner, they will assist you with any warranty-related concerns.

We're here for you! Send us a message at +1 -868-433-3649 or write to us at hello@myreflexashop.com. Also, to stay updated on all our exciting promotions and news, follow us on Facebook, Instagram, and TikTok. We look forward to you Flexing Your Specs! 📱✨

Disclaimer:

The information provided in this article is for general informational purposes only and is not intended to replace professional eye care advice. While we strive to ensure accuracy, we recommend consulting an optician or eye care professional for precise pupillary distance (PD) measurements, especially if you require progressive lenses or have specific prescription needs. Reflexa and Courts Optical are not responsible for any inaccuracies resulting from self-measured PD or the use of this guide. By using this information, you acknowledge that you do so at your own risk.
For personalized assistance, please visit a Courts Optical location or contact us at hello@myreflexashop.com.