Trifocals

S728 Perform™

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.

Addition:                Engraving     Default parameters:
1.5-4.0 Sign:                 Symbol:     CVD: 13 mm
  P                       ◇     FFT: 4 degrees
        PT: 6 degrees

S728 Atoric™

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. 

Addition:
1.5-4.0


S728 Classic

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. 

Addition:
1.5-4.0

 

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