Alpha H45
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Perfect balance between distance and near visual fields

IOT engineers have developed a new optimization model that generates better and more sophisticated progressive lenses. As a result, IOT has now even better control of the progression profile, and more fl exibility to distribute the unwanted astigmatism and create wider visual areas.

Alpha H45 is the update version of IOT Alpha H40 design. This design represents the most sophisticated designs with a great level of success. It maintains the same philosophy as the previous version but improves softness and usable areas. Developed to be eff ective at any distance, Alpha H45 is the perfect balance between far, intermediate a near vision. Its power distribution off ers not only clarity of vision at all distances, but also generous visual fi elds providing wearer and exceptional comfort to look at any gaze direction.

The increased benefits in the new version include:

  • Wider near visual field
  • More symmetric design, corridor is easier to be found
  • More stables areas for far and near vision
  • Lower level of unwanted astigmatism
  • Improvement of the general performance

Target & Positioning

  • Ideal for demanding customers
  • Premium all-Purpose Personalized Progressive Lens

Performance at each distance
Minimum Fitting Height MFH
14 mm
15 mm
16 mm
17 mm
18 mm
19 mm
20 mm

Cylinder Map MFH = 18 mm   Power Map MFH =18mm
  Wide near and far visual zones  
  Perfect balance between near and distance  
  Comfort and high precision together in the same lens  
  Available in seven progression lengths  
  High precision and high personalization due to Digital Ray-Path technology  
  Clear vision in every gaze direction  
  Oblique astigmatism minimized  
  Variable Inset: Automatic and manual  
  Frame shape optimization available  

Vertex distance  
Near working distance  
Pantoscopic angle  
Wrapping angle  

Design Performance



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