How do your patients view the world?

 

It All Comes Down to Lifestyle

Do your patients work outdoors? Are they builders, police or taxi drivers? Or, do they spend the majority of their time indoors?working, reading, watching TV or using the computer?

No two patients have the same prescription and visual needs, or use their eyewear in exactly the same way. This simple fact, plus the number of lens designs, materials and coating options available, makes it essential to find out as much as you can about how your patients use their eyewear. Lifestyle dispensing lets you prescribe or dispense eyewear that satisfies your patients' unique visual needs.

It's A Material World

High index, polycarbonate, plastic-- today's lens material choices are more numerous than ever. Combined with the incredible variety of progressive lens designs and coating options available, it's important to stay up to date in order to give your patients the best lenses for their lifestyle.

The Free-Form Digital Revolution

Technology is an important part of our lives, and this is especially true for today/s ophthalmic lenses. The latest designs in custom-made progressive lenses are entering the market with the promise of revolutionizing the way lenses are prescribed and manufactured.

This technology, known as digital or free-form surfacing, makes it possible to custom manufacture progressive lenses not only to your patient's exact prescription, but also to their specific visual lifestyle.

Custom Made For The Way You View The World

Custom made Perfas

Seiko Optical Products now offers your practice the very latest in the free-form digital surfacing revolution, with new Perfas back-surface progressive addition lenses.

Perfas lenses are available in three advanced designs: Prime, Premier & Prestige, each with three corridor lengths, maximizing the visual benefits to different lifestyle groups. In addition, Perfas designs can be manufactured in a number of materials and coatings, resulting in an incredible variety of lens options.

Perfas lenses represent the cutting edge of digitally surfaced free-form progressive lenses, utilizing patented 100% back surface technology. This technology 3-dimensionally fuses your patient?s entire prescription onto the back surface of the lens. This provides a visual experience that is simply unmatched by conventional progressive lenses that pre-mold the add power on the front surface.

Perfas lenses are fundamentally different from conventional progressive lenses. This is because conventional progressive lenses use pre-molded add power base curves that are designed to fit a wide range of prescriptions. Unfortunately, this means that for any particular lens curve, only a few patients in the center of the range receive an accurate prescription.

Perfas lenses, on the other hand, are custom made without the use of pre-molded add power base curves. All the elements of the progressive prescription--sphere, cylinder, axis, add and prism -- are placed on the back surface of the lens, customizing every Rx with aspheric compensation for each visual area based on the patient?s complete prescription. This means that for each sphere, cylinder, axis, add power and prism, the patient receives a truly customized lens with an exact near, intermediate and distance Rx.

While conventional PAL designs have, strictly speaking, only one optically precise Rx per base curve and add-power combination, Perfas lenses have billions of exact Rx combinations (considering each sphere, cylinder, axis, add power and prism).

Outstanding Optical Performance

Placing 100% of the prescription on the back surface provides features and benefits that cannot be realized by conventional PAL designs.

The perfect spherical convex surface on Perfas eliminates all the front surface distortion found in conventional PAL lenses. This "swim & sway" distortion is caused by the significant changes in front-surface curvature and optical magnification among the visual zones, and is a primary reason for non-adapts.

The Perfas back-surface design also expands all the visual fields. Similar to looking through an old door lock, the closer your eye gets to the key hole, the more of the next room you can see. This principle gives Perfas lenses distance, intermediate and reading zones that are up to 35% wider than conventional progressive lens designs.

Perfas lenses provide outstanding optical performance with an exact prescription every time. Patient accommodation is practically automatic, as each lens is prescription-specific throughout all viewing zones. Perfas lenses are ideal for current progressive wearers, first time wearers, and those with difficult progressive prescriptions.

Perfas lenses are designed to fit nearly all frame styles and come in a variety of materials that provide the ultimate durability in thin, light, and scratch resistant lenses. Perfas also comes in impact resistant materials for added safety.

A wide range of treatment and coating options are also available. These include Transitionsﾮ for healthy sight in every light, polarized glare-reducing sun wear, and Surpassﾮ ECP easy-to-clean anti-reflective coating, providing sharper vision, better night driving and improved cosmetics.

Perfas fits many frame styles

Perfas lenses are designed to fit a variety of modern frame styles. Perfas Prestige and Perfas Premier are ideal for frames with a "B" measurement under 28mm.

 

 
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Auto-Focus Lenses

To Behold the Beauty of an Amazing World...

  • Pentax Retina Forward Designﾮ provides wider visual field for comfortable, effortless viewing.
  • Greater asphericity for a more natural appearance and a slimmer lens profile.
  • Optimized position-of-wear optics for crystal clear, aberration-free (AF) vision.
  • Superior optics in a short corridor design.
  • Available 14mm corridor design for smaller frame sizes

The innovative design of Pentax AF Progressives creates a new level of optical performance in progressive multifocal lenses. This Pentax-exclusive technology, called Retina Forward Design, enhances performance in three ways:

Optimized for the position of wear

Changes in viewing angle, lens tilt, and vertex distance in different positions of gaze create optical aberrations that reduce clarity and comfort. This is especially true with aspheric lenses, which have flatter curves. Since these optical errors are caused by position of wear factors, they are not detected by conventional lensometry.

Pentax AF Progressives are specifically designed for how lenses are actually worn. In Retina Forward Design, lens surface power is precisely calculated at 5,000 points on each AF Progressive to optimize optical performance and reduce aberrations caused by pantoscopic tilt, vertex distance variations, and object distance. Though these power adjustments are small, they pay huge dividends by improving image quality at the retina in all directions of gaze for greater clarity and wearing comfort.

Smoother power changes

The surface power optimization of Retina Forward Design gives Pentax AF Progressives smoother power transitions and wider viewing zones. This creates a more natural viewing experience virtually free of swim or distortion.

Slimmer aspheric profile

Retina Forward Design makes it possible for Pentax AF Progressives to have a slimmer, more attractive profile without compromising optical performance. Base curves are flattened up to 1.5 diopters to create the slimmest, most attractive lens possible. In plus powers, the flatter curves of Pentax AF Progressives also reduce unwanted magnification and give a more natural appearance to the wearer?s eyes.

Retina Forward Design Means No Swim!

The position of a lens when worn in front of the eye affects its optical performance. One variable in lens position is vertex distance. Vertex distance is the distance from the back surface of the lens to the apex of the cornea of the eye.

The effective power of lenses changes with vertex distance. With increasing vertex distance, plus lenses effectively get stronger, while minus lenses effectively get weaker. Conversely, when vertex distance is shortened, minus lenses effectively get stronger, while plus lenses effectively get weaker. Therefore, control of vertex distance (or making lens power compensations for changes in vertex distance) is important to maintain the effective power of a lens when it is worn in front of the eye.

Vertex distance also affects field of view. The shorter the vertex distance, the wider field of view. A shorter vertex distance also enhances the cosmetic appearance of eyewear. Therefore, spectacle lenses should be fit with a vertex distance of approximately 12mm. This distance provides wide fields of view and a cosmetically pleasing appearance, while providing adequate separation from the face to prevent the wearer?s eyelashes from touching the back surface of the lens.Pantoscopic Tilt

A second factor that affects the optical performance of a lens is pantoscopic tilt. Pantoscopic tilt is the angle between the plane of the spectacle lens (and frame front) and the frontal plane of the face when the superior edge of the lens is farther away from the frontal plane than the inferior edge. Pantoscopic tilt brings the front of the frame into proper relationship with the wearer?s eyebrows and cheeks. It also provides the widest field of view for reading, since the vertex distance of the lower half of the lens is minimized. However, tilting a lens in front of the eye induces a lens aberration called marginal astigmatism. Pantoscopic tilt changes the effective sphere power of the lens and induces cylinder power at axis 180ﾺ. For compound prescriptions with axis other than 180ﾺ, pantoscopic tilt changes the effective axis of the cylinder power. And pantoscopic tilt reduces vertex distance for the lower half of the lens, but increases vertex distance above the 180ﾺ line.
AF Availability
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Single Vision Transitions

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Pentax Brand Single Vision Lenses

Seiko Optical Products understands the importance of a clear image.

As a world leader in single-vision lens design and manufacturing, we continue to provide outstanding value and quality.

In every PENTAX branded lens, you'll see the same attention to detail paid to Seiko branded lenses. These lenses offer an unbeatable combination of clarity, performance, durability, and value.

Click a link below for more information on our single-vision lens products.

 

Single Vision Transitions Lenses

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1.60 & 1.67 UltaThin UV with Surpass ECP AR

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DiamondClear Poly - Spherical & Aspheric designs with Surpass ECP AR

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Ultra 1.50 Clear

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Surpass Single-Vision Lenses

Seiko Optical is proud to service your custom AR coating needs with Surpass ECP Super Hydro AR. This outstanding protective topcoating combines hydrophobic and oleophobic chemistry to provide ultra-high coating surface tension. The result is a lens that is extraordinarily easy to clean! Engineered for the best overall durability, Pentax Surpass ECP repels water, oils and grime, while preventing deterioration due to UV, humidity and normal temperature fluctuations.

Surpass ECP AR is also available in stock finished single-vision lenses in all materials:

  • UltraThin 1.67 and 1.60,
  • DiamonClear premium polycarbonate
  • Ultra 1.50 plastic
Custom Coating Manual Download our Custom Coating Recommendations Brochure