Seiko Free-Form Lenses
Seiko Free-Form Lens Technology & Specifications |
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Seiko Super MV 1.67 (MaxVue)
Features & Benefits:
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: Aspheric Lens Design: Seiko Super MV Design:
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Patented 100% back surface design technology
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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).
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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.
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Quick Facts
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