Pupillary Distance | Ruler Buy

: Since most of us aren't trained ocular technicians, having a visual guide is invaluable. Where to Buy

: Some rulers offer measurements for "Single PD" (total distance) and "Dual PD" (distance from the bridge to each individual pupil), which is often more precise for high-index prescriptions. pupillary distance ruler buy

: If you're prone to losing small items, Walmart offers a multi-pack of straight-edge white rulers. Ezyaid PD Ruler : Since most of us aren't trained ocular