Vista PAL

Introducing Vista PAL

Progressive-Lenses-ParametersProgressive Lenses Parameters
  • Wide and smooth progression zone
  • Wide reading zone
  • Distortion free and wide distance vision zone
  • Balanced & minimized distortions in the peripheries.
  • Lens design Technology–Eye Element technology

Eye path

Eye-pathThe natural eye path changes according to prescription.
Difference between additions can be between 3.5° and 8°

 


Eye path of different Add

Eye-path-of-different-AddFor a patient with a low add, this could be his eye path if he moves to the reading area of the lens.

So, if he is using a conventional PAL, he may not have problems. But, for a wearer that has a high add, his eye actually converges more, and at the same time, it doesn’t drop as low as when his add power was lower. Presuming the wearer requires a +3.00 reading add and he is being prescribed with a conventional PAL, his eye may only reach say, +2.75d. So, because of this, that is why you find that you may have to increase the addition for some patients.

 


Minimizing distortions
Controlling the distortion is the key to the ultimate progressive lens Topographic Map

Wide Choice of Tints

Eye Element Technology

Vista Progressive Lenses has precise hi-tech Eye Element Technology that ensures accurate analysis necessary for sophisticated lenses. By observing exact vision requirements, designers can finally create tailor-made lenses.


The technology that enables us to design progressive lenses through an exact simulation of the natural human eye view.

The surface of the lens is scanned by a 3D measuring system, mapping the curvatures of the lens. The optical power is created by 3 parameters: thickness, index and curvatures Light does not always travel straight into the eye

Eye Element technology allows the progressive wearer to view clearly without moving their head….

……regardless of the path, light travels


The surface data & a highly advanced mathematical algorithm are the basis to Eye-Element Technology which takes into account numerous parameters:

  • Lens index refraction
  • Lens prescription
  • Lens center thickness
  • Distance from the eye to the back vertex of the lens
  • Distance from the lens to the object
  • Object’s angular position in the eye’s field of vision
  • Pantoscopic tilt of the frame
  • Pupil distance
  • Thickness reduction prism, and more.

Designed for any size


Summary

Surround Vision: Vista Progressive ensures improved peripherial vision because it is designed through an exact simulation Of the eye.
Prism Balance: Vista Progressive guarantees perfect binocular vision enabling patients to clearly perceive an object’s depth and dimension.
Super Clarity: Vista Progressive is based on the advanced Eye Element Technology, vision clarity is enhanced even more, bringing it to an optimal level in every vision zone.
Soft Design: A technological breakthrough, Vista’s Eye Element Technology ensures the softest lens design for every vision zone.