Gradal
Top Progressives
by Carl Zeiss
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Patented Horizontal Symmetry - Patients experience unimpaired fusion (binocular balance) and normal depth perception (both eyes see image at the same time in each point in the lens)
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Fully Aspheric - No distortions and full peripheral vision in the distance zone above the 180 line (flatter, thinner and lighter weight PAL with reduced eye magnification and minification)
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Consistent Channel Length - Never varies between add powers
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Variable Inset - the intermediate and near zones are perfectly aligned for the patients (the progressive zone inset factors the distance and add for optimum binocular usability of the progressive zone)
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True Value - The patients' eye receives exactly the add prescribed (the add power compensates for errors from the index of refraction, horizontal astigmatism and vertical astigmatism)
For a New Perspective on Vision
from Near to Far