Quick Answer
Frame size categories are based on frame width (hinge to hinge). Your PD is a helpful secondary check for lens alignment.
Categories
| Fit | Frame Width (hinge to hinge) | Best For |
|---|---|---|
| Narrow | ≤128 mm | Smaller faces, PD 54–58 |
| Medium | 128–132 mm | Average faces, PD 58–62 |
| Wide | 132–136 mm | Wider faces, PD 62–66 |
| Extra Wide | >136 mm | Larger faces, PD 66+ |
Better Approach
Measure your current frame hinge to hinge and compare to KEZVOR product specs. Guide: Frame Size Measurements