09/09/2026
Let's Talk About Pupillary Distance (PD) 👓
We get this request a lot: "Can you just give me my PD?"
We understand why you'd ask! It seems like that one number is all you need to order glasses.
Here's what most people don't realize — PD is only one small part of how glasses are actually made to work for you.
Today's lenses are incredibly advanced. Especially progressives, computer/occupational lenses, and even high-prescription single vision lenses, they need much more than just a binocular PD to perform their best.
When we dispense glasses in our office, we measure:
- Monocular PDs (right and left are rarely exactly the same)
- Fitting heights - where your eyes sit vertically in the frame
- Vertex distance - how far the lens sits from your eye
- Pantoscopic tilt & face-form wrap - how the frame angles on your face
- And we do a full frame adjustment first - because measurements taken on a crooked frame won't be accurate.
Think of it this way: PD tells us where your pupils are, but it doesn't tell us anything about the frame you chose, the lens design you need, or how that frame actually sits on your face. Without those other details, even a perfectly accurate PD can't guarantee clear, comfortable vision.
This isn't about online vs. in-person glasses. It's about making sure the prescription your doctor prescribed is positioned exactly where the lens was designed to work best.
Every practice handles PD a little differently — some provide it at no charge, some charge for the professional measurement time, and some include it as part of a complete eyewear dispensing service. At our practice, we include all of these precise measurements as part of the service when we make your eyewear, because our goal is always the same: your best vision.
We're always happy to talk through what measurements you need and why. Patient education and great vision will always be at the center of what we do.
Have questions about your measurements or lens options? Stop in — we're happy to explain.