Seiko Free-Form Lenses

Download Seiko Free-Form Lens Information:

• Seiko Super MV 1.67 (MaxVue) Lens
• Seiko Succeed Brochure
• Seiko Succeed Fit Guide
• Seiko Supercede Brochure
• Seiko Supercede Fit Guide
• Seiko Supercede Availability
• Seiko Free-Form Lens Selection Guide

Seiko Super MV 1.67 (MaxVue)
The world’s most advanced free-form single vision lens.

The first double-sided aspheric design technology from SEIKO provides the highest optical performance in a lens that is lighter, thinner and more comfortable than conventional spherical and aspheric designs.

Features & Benefits:

• Thinner and lighter with flatter curves on both sides.  Comparable to 1.74 index lenses
• Back surface free-form compensation virtually eliminates power error, distortion and marginal astigmatism.
• Improved optics over all other single vision lenses with the widest peripheral vision.
• Ideal for difficult Rx’s, especially high cylinder.

Technical Specifications:

Introducing Seiko Super MV 1.67, the world’s first 1.67 high index double-sides aspheric single vision lens from Seiko Optical, the leader in high index lens design.

Seiko Super MV 1.67 (MaxVue) lenses takes advantage of the latest in free-form lens technology to create the highest standard in terms of optical performance, thickness, lightness and comfort.

Seiko’s double aspheric design creates a thinner and lighter lens, with flatter curves on both sides. 

Super MV’s unique combination of low base curve and concave free-form aspheric design compensates for distortion, peripheral power error and astigmatic aberration in a balanced manner.  The result is exceptional clarity of vision throughout the entire lens, with significant improvement in the effective viewing area of the lens, especially in prescriptions with high cylinder.

Seiko Super MV lenses provide standard aspheric compensation on the front surface, which includes a Seiko-exclusive 10mm spherical fitting button in the lens center for instant patient accommodation.  The free-form back surface provides precise secondary aspheric/atoric compensation for each individual prescription.  The result is exceptionally wide peripheral vision with stable, comfortable vision throughout the entire lens.

Spherical Lens Design:
In a spherical lens designs, power errors are increased in the peripheral are of the lens.  The effective viewing range is therefore considerable limited.  Spherical lenses are also thicker and heavier.

Aspheric Lens Design:
In aspheric lens designs, the aspheric front surface controls astigmatism and power error in the spherical power, resulting in wider peripheral areas.  Aspheric lenses are thinner and lighter than spherical lenses.

Seiko Super MV Design:
In Super MV lenses, power error and marginal astigmatism in the peripheral area of the lens are optimized in the spherical and cylinder powers, significantly improving the effective viewing range.  The lens has an aspheric design on the front surface, precise secondary free-form aspheric compensation on the back surface and a 10mm spherical fitting button.  The result is optimal performance in each and every prescription.

Patented 100% back surface design technology

• The patient’s entire prescription is three-dimensionally fused onto the back surface of the lens. This eliminates front-curve distortion, provid­ing total control of marginal astigmatism and power error
• True, customized, Rx-specific aspheric power compensation in the progressive channel results in billions of optically precise prescriptions
• All visual fields are significantly expanded, with consistently wide near vision

Seiko Succeed Ws and Succeed In­ternal Free-Form progressive addition lenses are made using a patented, technologically advanced design that 3-dimensionally fuses the patient’s entire prescription onto the back surface of the lens. This offers tremendous advantages over conventional front-surface progressive designs.

To begin with, the front surface shape magnification differences between visual areas are eliminated. In conventional progressive lenses, distortion is induced by the shape changes on the pre-molded front curve, and by power changes on the back. The front surface on Seiko Internal Free-Form lenses is a perfect sphere, eliminating distortion due to front surface shape changes (Fig 1).

The wearer experiences a consider­able reduction in overall size and skew distortion, with a virtual elimi­nation of image sway & swim (Fig 2).

A second advantage of internal free­form design is that, by placing the progressive surface on the back of the lens, it is closer to the eye. This considerably expands all the fields of view (distance, intermediate and near). These larger fields of vision in turn provide better image stability, greatly exceeding the limitations of conventional progressives (Fig 3).

In conventional PAL design, any particular base curve covers a wide range of power. Consequently, each base curve is optimized only for a specific spherical Rx at the center of its range. Therefore, good visual acuity is only effective somewhere in the middle of the entire range for each base curve. This affects the reading area the most, due to the fact that it is “off-center,” meaning that power error and unwanted astigmatism are induced and automatically present. Therefore, optics are compromised by these naturally occurring primary aberrations in all prescriptions that fall outside this narrow band.

Seiko Internal Free-Form lenses fuse toric and progressive surfaces into one complex curve. Aspheric compensation is customized in the progressive channel based on the
patient’s complete Rx. This compen­sation specifically takes into consid­eration each sphere, cylinder, axis, prism and add power combination. This means that Seiko Internal Free-Form lenses can be surfaced into billions of unique Rx combinations (considering each sphere, cylinder, axis, prism and add), all of them ex­act. A conventional progressive lens can have, strictly speaking, only one optically precise Rx per base curve and add combination (generally around 65 total).

Seiko Internal Free-Form lenses pro­vide total control of off-center astig­matism and power error. This gives the lens accurate power throughout the expanded reading area. The design also incorporates aspheric power control in the corridor, along the entire principle meridian. This compensates for changes in vertex distance as well as the degree of vi­sual axis (rotation) as the eye focuses from distance to near. The resulting gradient cylinder control within the corridor vastly improves intermedi­ate vision.

Quick Facts
Seiko Internal Free-Form lenses are new, innovative progressive lens products that feature Seiko Epson’s patented 100% back surface design technology. They have been avail­able world wide for over a decade, and are now available–with the latest design advancements–in the U.S. marketplace.

Seiko Internal Free-Form lenses are designed for people who appreci­ate wide distance vision and who require the widest reading and in­termediate areas. They are the per­fect first pair of progressive lenses, and ideal for replacement, or for patients sensitive to the distortion in regular progressive lenses.

These lenses owe their success to the exclusive design, which 3-dimensionally fuses the pa­tient’s entire prescription onto the back surface of the lens. This complex surface gives accurate
power throughout the reading area, provides gradient cylinder con‑
trol along the entire intermediate area, and has a significantly wider, distortion-free distance vision area.

Technically, the lens provides for total control of marginal astigma­tism and power error through as­pheric compensation for each Rx. This means for each sphere, cylin­der, axis, prism and add power, the patient receives a truly customized lens with an exact Rx for near, an exact Rx for intermediate, and an exact Rx for distance.