Spherical

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Geometry

  • Spherical front and back optic zones
  • Aspheric flattening
  • Front spherical multicurve optic zone
  • Distance or Near in center

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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
  • Addition: +0.50 bis +4.00 dpt
  • Central optical zone Zoc: 1.00 bis 4.50 mm
  • Flattening: (-) flowing/ (+) pronounced/ (–) monocurve

steps 0.01 mm / 0.01 dpt / 1°

First fitting

  • Total diameter: = corneal diameter + 2.10 mm
  • Base curve: = flattest corneal curve + 0.60 mm
  • Sphere: glasses in DVO = 0 mm
  • Addition: Addition der Brille
  • Zoc, position and variations: under “Read more”
  • Flattening: comparing the sucus

Materials

Read more