Table 2

Lens details of Menicon Z Night lens

ParametersDescription
Material nameSiloxanylstyrene fluoromethacrylate (tisifilcon A)
Dk (IOS)163×10−11
DesignSpherical/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 width1.2 mm for 10.6 mm lens
Alignment curve width1.1 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)
FenestrationThree, located in the reverse curve, 120° apart
Central thickness (mm)0.24