Toric

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The soft torical contact lens is available in different geometries:

Geometry

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  • Back spherical optic zone with aspheric flattening
  • Front multifocal-toric optic zone
  • Dynamic stabilisation with bumps nasal and temporal

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  • Back toric optic zone with aspheric flattening
  • Front multifocal optic zone
  • Dynamic stabilisation with bumps nasal and temporal

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  • Back toric optic zone with aspheric flattening
  • Front multifocal optic zone
  • Ballast stabilisation

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Multifocal Variations:

  • Bifocal (Bf): two spherical concentric optic zones distant / near
  • Simple Progressive (Sp): spherical and aspheric concentric zones: distant / intermediate / near
  • Multi progressive (Mp): multiple spherical and progressive concentric zones: distant / intermediate / near

Technical data

  • Total diameter: 12.00 -> 15.00… 19.00 mm (according to material)
  • Base curve: 7.00 -> 12.00 mm
  • Sphere: -40.00 -> + 40.00 dpt
  • Cylinder: -0.25 -> -8.00 dpt
  • Axe: 0° -> 180°
  • Addition: +0.50 -> +4.00 dpt
  • Central optical zone (Zoc): 1.00 -> 4.50 mm
  • Flattening: (-) flowing/ (+) pronounced/ (–) monocurve

steps 0.01 mm / 0.01 dpt / 1°

First fitting

  • Total diameter: = corneal diameter + 2.5 mm (Ext / Int) / + 2.3 mm (Bal)
  • Base curve: = flattest corneal curve + 0.8 mm (Ext / Int) / + 0.7 mm (Bal)
  • Power: glasses in DVO = 0 mm
  • Addition: glasses addition
  • Zoc, position and variations: under “Read more”
  • Flattening: comparing the sulcus

Materials

Read more