Quick Answer
Prescription values like -1.00 mean SPH -1.00. Enter each field exactly as written on your RX paper.
Field Guide
| Field | Meaning | Example |
|---|---|---|
| SPH | Sphere — nearsighted (-) or farsighted (+) | -1.50 |
| CYL | Cylinder — astigmatism | -0.75 |
| AXIS | Astigmatism direction (1–180) | 90 |
| ADD | Reading addition (progressive/bifocal) | +2.00 |
| PD | Pupillary distance | 62 |
Tips
- OD = right eye, OS = left eye
- If your doctor wrote -100, enter -1.00 (divide by 100 if no decimal)
- Full guide: How to Fill Out Your Prescription
- PD questions → PD Help Center