Table 2.
Lens details of Menicon Z Night lens
| Parameters | Description |
| Material name | Siloxanylstyrene fluoromethacrylate (tisifilcon A) |
| Dk (IOS) | 163×10−11 |
| Design | Spherical/toric lens (parallel reverse geometry) |
| Back optic zone radius (mm) | 7.20–9.50 (in 0.05 mm step) |
| Back optic zone diameter (mm) | 6 |
| Lens diameter (mm) | 10.20/10.60/11.00 |
| Reverse curve width | 1.2 mm for 10.6 mm lens |
| Alignment curve width | 1.1 mm for 10.6 mm lens |
| Tangential angle (°) | 50–65 (in 1° step) |
| Sagittal depth (mm) | 0.50–0.99 (in 0.01 mm step) |
| Fenestration | Three, located in the reverse curve, 120° apart |
| Central thickness (mm) | 0.24 |