Varilux PHYSIO F-360

The way in which we wear our spectacles affects our overall visual performance. Spectacles are worn in a way that is very personal to each wearer and they all fit differently. That's why Essilor has created a personalised varifocal lens called Varilux Physio f-360°.

Varilux Physio f-360° lenses are unique to each wearer. The lens design takes into account a number of fitting measurements that are unique to you and your spectacles so consequently, no two lenses are ever the same.

See more naturally

+ 30% better visual performance
+ 30% better contrast
+ 30% wider area of clear vision
+ 30% more natural vision thanks to the personalisation.

Wavefront Management System™

The Wavefront Management System™ is a design approach that considers the wavefront of the beam of light entering the pupil.

Quality of vision depends on how much the wavefront is distorted by both sides of the lens.Optimising the wavefront through the front and rear surface of the lens greatly reduces aberrations including higher order aberrations like the coma.

Point by Point Twinning™

Calculation

With both lens surfaces affecting the quality of the wavefront, in order to maintain optimal optical performance in all directions of gaze, Essilor’s patented innovative new calculation software exactly matches the front and rear surfaces at all points on the lens.

Manufacture

To ensure the optimal performance of very complex progressive surfaces across a very large prescription range, Essilor has developed an Advanced Digital Surfacing technology, an extremely accurate manufacturing process that creates the required surface.

Design Summary

This innovative approach to design and processing means that wearers using

Varilux Physio can benefit from significant improvements in the three main visual areas:

Distance vision

The higher order aberration coma is controlled, delivering superior visual sharpness

Intermediate

The axis of unwanted peripheral surface astigmatism is controlled in a vertical direction, delivering wider areas of clear vision

Near

The power of the near zone is controlled over a larger vertical area giving greater visual and postural comfort.

Varilux Physio f-360°

High Resolution Vision with Fitting Conditions

As fitting gradually moves away from the ‘standard measurements, the performance of the lens gradually deteriorates.

To overcome the potential drop in performance of the lens, Essilor has included five fitting measurements to define accurately the position of the lens in front of the wearer’s eyes.

By factoring these measurements into the design calculation of Physio f-360° the areas of clear vision are aligned perfectly in relation to the wearers’ natural line of vision, from the distance zone through to intermediate through to near.

Near vision point location

To achieve perfect alignment, the exact position of the near vision zone is tailored to the five measurements. Vertically, the position can vary between 15-18mm, with the horizontal inset varying between 1.7 & 7mm. This exact positioning ensures the wearer no longer needs to adopt unnatural postural adjustments for near vision tasks. Postural comfort and sharp crisp vision are achieved naturally without constraints.

Variations of the distortions depending on the position of the lens in front of the eye

Fitting conditions affect all areas of vision but particularly near vision

Fitting 1 Fitting 2 Fitting 3

Standard varifocal lens without fitting condition

Varilux Physio f-360° uses five fitting parameters

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wavefront analysis

The Wavefront technology allows analysis of lens performance. With Varilux Physio f-360° the beam of light passing through the lens is virtually aberration free for any direction of gaze whatever the fitting conditions.

Better all round performance

Varilux Physio f-360° builds on the success of Varilux Physio but thanks to the personalisation of the design according to fitting conditions, the areas of clear vision correspond each wearer’s exact requirements.

Varilux Physio Video

Montreal university interview

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