How to Find Your PD for an EyeBuyDirect Order

To order prescription glasses from EyeBuyDirect, you'll need your pupillary distance — and if your prescription didn't come with it, which happens a lot, here's how to get it. This guide covers what EyeBuyDirect specifically needs; for the fundamentals of PD, see our complete guide to measuring pupillary distance.

What EyeBuyDirect accepts

EyeBuyDirect takes either format — a single PD (one number, pupil to pupil) or a dual PD (each pupil to the nose center, right eye first). If you're not sure which you have or need, single PD vs dual PD sorts it out.

One common mix-up worth clearing up: the numbers printed inside your current frame's arms are not your PD — they describe the frame (lens width, bridge, arm length). Your PD isn't etched anywhere on your glasses.

EyeBuyDirect's own tool — and an alternative

When entering your prescription on EyeBuyDirect's site, pressing the "i" button in the PD section opens a tool that measures it with your phone's camera. They also offer a printable ruler and a mirror method.

If you'd rather not deal with a printout or card, our PD measurement tool uses your camera with the iris as a built-in scale — no download — and returns both the single and dual numbers, ready to enter into EyeBuyDirect's PD fields.

Where else to find it

Check your prescription first (PD is sometimes listed, sometimes not), or ask the office that did your exam. A pupillometer reading taken during an exam is the most accurate you'll get.

What happens if your EyeBuyDirect PD is wrong

Read EyeBuyDirect's guarantee closely: its 365-day guarantee covers defects in craftsmanship, explicitly not errors caused by the customer — so a mistyped PD falls outside it, and the standard 30-day return window is your realistic path. How that compares to Zenni, Warby Parker and GlassesUSA is laid out in what each store does if your PD is wrong — worth a look before ordering, especially on a strong prescription where a small PD error matters more (does your PD need to be exact).

Worth remembering

At-home measurement is an estimate, not a clinical reading — true of every retailer's camera tool too. For low-to-moderate single-vision prescriptions that's usually fine. For progressives or strong prescriptions, measure a few times and, if you can, confirm against a professional measurement. Consistency across a few tries is your best signal you've got it right.

Sources

• EyeBuyDirect — How to Measure Pupillary Distance (PD)
• EyeBuyDirect — Pupillary Distance Ruler (Printable PDF guide)
• EyeBuyDirect — Shipping and Returns