| Nominal Curve | True Curve | Radius mm | SAG at 50 | Nominal Concave | Edge Thickness | Center Thickness | Adds in 0.25 Diopter Steps | Adds in 0.50 Diopter Steps |
| 10.00 | 9.86 | 53.752 | 6.17 | 3.00 | 6.5 | 13.7 | 1.00 to 3.00 | 3.50 & 4.00 |
| 12.00 | 11.82 | 44.839 | 7.62 | 3.00 | 6.5 | 15.0 | 2.00 to 3.00 | 3.50 to 5.00 |
| 13.50 | 13.46 | 39.376 | 8.95 | 3.00 | 6.5 | 16.8 | 2.00 to 3.00 | 3.50 to 5.00 |
| 15.00 | 14.97 | 35.404 | 10.34 | 3.00 | 6.5 | 18.5 | 2.00 to 3.00 | 3.50 to 5.00 |