S728 Perform is a trifocal lens with fully optimized optics in all directions. Including calculations based on frame parameters. The middle segment has 50 % of the addition.
|1.5-4.0||Sign: Symbol:||CVD: 13 mm|
|P ◇||FFT: 4 degrees|
|PT: 6 degrees|
S728 Atoric is a trifocal lens with a back surface atoric design with an individualized aspherization in both meridians for all powers. Optimized calculations for all base curves. The middle segment has 50 % of the addition.
S728 Classic is a trifocal lens with a spherical design. The peripheral optical quality is decreased because of the spherical geometry. Especially when a changed base curve is desired or with a prescription with high cylinder power, S728 Classic is not recommended. The middle segment has 50 % of the addition.