ZEISS Raises the Bar for Single Vision Lenses With Revolutionary ZEISS ClearView Lenses.

Thinner, Flatter and Sharper Than Ever Before

With single vision lenses being the most popular eyeglass lens type worldwide, ZEISS’s ClearView Single Vision lenses have revolutionized standard single vision lenses by incorporating many attributes of complex freeform designs into both surfaced and stock lenses. These carefully crafted optics offer clear visuals from the center to periphery while being significantly flatter and thinner to improve overall aesthetics. An industry first, these innovative standard single vision lenses will certainly benefit both eyecare professionals and their patients alike.

Globally, 75% of people who wear eyeglass lenses purchase single vision lenses.[1] These are often stock lenses due to their low cost and speedy delivery for both the eye care professional and patient. In comparison to freeform-optimized lenses, standard single vision lenses are unable to unlock the full potential of precision. ZEISS ClearView lenses are engineered to give you many of the same benefits of freeform-optimized single vision lenses, but with the cost benefit of a standard single vision lens.

“Innovation is at the core of the ZEISS brand, and we are transforming the standard single vision lens market by bringing many aspects of freeform lens design to the single vision lens category in both surfaced and stock”

Jens Boy, President ZEISS Vision Care North America

The ZEISS ClearView Benefits

ZEISS ClearView lenses offer, on average, a three times larger zone of excellent clear vision and provide the wearer with more clarity from the lens center to the periphery. In addition, ZEISS ClearView lenses are, on average, 49% flatter across all prescriptions and up to 16% thinner compared to typical spherical single vision lenses.[2] [3]

compared to standard single vision lenses

Standard single vision lenses do not traditionally have great peripheral optics

Generally, standard SV lenses are evaluated based on their material index, anti-reflective coatings, UV and blue light blocking abilities or how thin and flat they appear. The lens power is typically measured from the middle of the lens with vision clarity and optical performance across the entire lens being often neglected. Whether a stock FSV or SV surfaced lens, the truth is that traditional SV lenses do not offer superior peripheral optics. With the restrictions of ordinary SV lens designs, the ambition to make them flatter and thinner further compromises their optical performance particularly in the periphery of each lens.

Typical single vision designs are thicker than ClearView — ^{Figure 1. With typical SV lens designs, the drive for flatter and thinner lenses compromises the optical performance especially in the lens periphery (schematic illustration).}

Patients want clarity across the entire lens

When single vision wearers were asked about the importance of different lens features (Figure 2)[4], 100% clearly stated that it was extremely or very important to them that their lenses offer comfortable vision across the entire lens. 90% stated that it was extremely or very important for them to see clearly across the entire lens.

Consumer demands for single vision lenses — _{^{Figure 2. Consumer ratings when asked about the importance of different lens features for single vision lenses.[4]}}

When questioned on the importance of different lens features (Figure 2)[4], every single vision wearer (100%) emphasized that it was absolutely essential to have lenses which provide comfortable and clear vision across the entire lens surface.

The evolution of single vision lens designs

So why is it that many SV lenses show underwhelming performance in regards to their peripheral optics? The answer is found within the design of the lens itself. While multiple forms can be used to obtain a central power for any given lens, different designs lead to varied aesthetics and wearing comfort, as well as having a massive influence on optical performance – especially in the lens periphery. Therefore, by optimizing lens design complexity (Figure 3), broader optical effectiveness across an entire lens may be accomplished.

Single Vision lenses

ZEISS wanted to redefine the playing field and ask why standard single vision lenses couldn’t provide numerous sight benefits similar to freeform lens design. Consequently, they set out on a mission to challenge this notion for many single vision wearers.

the eye's center of rotation varies by prescription. — ^{Figure 6. Due to difference in eyeball geometry between emmetropes, hyperopes and myopes, the eye’s center of rotation (CoR) varies by prescription. The total distance between the back vertex of the eyeglass lens and the CoR (b’) is relevant for the optimization of eyeglass lenses}.

ZEISS has found a way to make complex freeform lens designs more accessible in standard single vision lenses, with no need for compensated Rx values, in both FSV and surfaced SV lenses. The advanced freeform design used by ZEISS ClearView SV is optimized point-by-point on the lens surface using 700 different parameters across one quadrant of the lens. The lens power is optimized and then replicated twice over to cover all surfaces of the lens, ensuring maximum precision. The outcome is a remarkable SV lens that is thinner and flatter, but also provides exceptional optics – boasting clear visuals in the middle of the lens all the way to its edges.

optimized with over 700 free calculation parameters — ^{Figure 7. Lens surface shape are optimized with >700 free calculation parameters.}

ClearForm® technology by ZEISS

ZEISS ClearView SV lenses can be delivered by two methods.

ZEISS ClearView lenses are available as finished single vision or surfaced single vision

I. ZEISS ClearView SV lenses are made to order and crafted with an innovative Freeform Rx lens surfacing process that was once exclusive to premium lenses. This equipment is gaining widespread acceptance in the ophthalmic sector, but its benefits can only be realized when paired with a more advanced freeform lens design such as ZEISS ClearView. Without it, very little value comes from designing SPH or AS lenses.

II. ZEISS ClearView FSV lenses are pre-manufactured for immediate delivery or are in-stock at customer locations for a quicker delivery to patients. These remarkable lenses are the result of ZEISS’s revolutionary ClearForm® technology, which brings a freeform lens design to life in a finished stock lens – an endeavor that could only be achieved through extensive collaboration among our ZEISS global centers of excellence. From lens design and industrial metrology in ZEISS’ German headquarters to freeform mold generation at the European glass mold making center of excellence to a collaboration between international R&D and manufacturing locations for casting development.

A 3X larger zone of excellent vision clarity.

To ensure that ZEISS ClearView FSV lenses provide the exceptional optical performance they were designed for, their optical performance was studied using the advanced ZEISS Vision Clarity Simulation.

ZEISS ClearView lenses offer 3X larger zone of vision clarity — ^{Figure 8. ZEISS ClearView FSV provide on average 3 times larger zones of excellent vision clarity than ZEISS AS FSV as shown by the white areas on the simulated vision clarity lens plot.}

ZEISS ClearView FSV lenses provide an average of 3X and up to 5 times more extensive zones of visual clarity for single vision wearers in comparison to traditional ZEISS Aspheric FSV lenses, as confirmed by this comprehensive analysis.[8] On average, ZEISS ClearView FSV lenses provide an impressive 3.1 times larger area with excellent clear vision versus the preceding ZEISS AS FSV lenses. For higher myopic prescriptions this number can reach up to 4.0x while for those with hyperope prescriptions it can be as high as 5.1x.

Thinner Lenses

With ZEISS ClearView SV lenses, wearers can experience excellent vision clarity in a lens that is flatter and thinner than conventional lenses that rely on steeper base curves to provide acceptable optical performance. Freeform SV lens designs with point-by-point optimization provide a thickness reduction at the lens edge for minus lenses.

ZEISS ClearView SV lenses are thinner and flatter, provide outstanding performance, surpassing what is achievable through conventional lenses with steep base curves. By using point-by-point optimization in the Freeform SV lens designs, they create a reduction in thickness at the edge of minus lenses as well.

ZEISS ClearView single vision lenses are flatter and thinner than traditional single vision lenses — ^{Figure 9. Values for lens flatness and lens thickness of ZEISS ClearView 1.60 FSV and ZEISS AS 1.60 FSV compared to ZEISS SPH 1.60 FSV averaged for -5 D and +5 D with and without cylinder of -2 D.}

When it comes to plus lenses, which are generally thicker in the middle of the lens, 1.60 ZEISS ClearView FSV is on average 8% thinner at its center and up to 13%, particularly for prescriptions that exceed +5.00 D sphere power. This comparison has been made when contrasted with 1.60 ZEISS SPH FSV lenses. (Figure 9).[3]

Flatter Lenses – with no optical compromise

ZEISS ClearView SV technology allows wearers to have flatter, more attractive lenses with little compromise in peripheral vision clarity, thanks to its reduced curvature. On average, FSV forms are 34% flatter than ZEISS SPH 1.6 FSV across all prescriptions; minus range can be up to 49% flatter and plus range up to 25%. (Figure 9)[3]

All in all, ZEISS ClearView FSV lenses are significantly flatter than typical SPH SV lenses by 34%, and up to 16% thinner. This ensures the highest caliber of vision clarity.

ZEISS ClearView SV – same fitting as for Aspheric Single Vision

To ensure superior performance, the optical center of your lenses should be centered on the wearer’s pupil. To guarantee this result, measure the fitting height to the pupil according to a horizontal viewing line and reduce it by 0.5 mm for each degree of pantoscopic tilt.

Single vision wearers can now enjoy a distinct, larger view of their lenses for an even more comfortable and satisfying experience with ZEISS ClearView lenses.

Good sight makes for better learning. Find out how vision impacts learning and why annual eye exams are important.

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References

[1] Strategy with Vision (September 2020). World Lens and Frame Demand Study, 2020.

[2] Measurements of lens thickness on 1.60 ZEISS ClearView FSV lenses compared to ZEISS spherical FSV lenses over a range of prescriptions (-5, -3, -1, +1, +3, +5 D with and without cyl -2 D). Maximum reduction of 16% for center thickness of +5.00/-2.00. Quantitative analyses by Technology & Innovation, Carl Zeiss Vision GmbH, DE, 2020.

[3] Measurements of lens flatness (base curve) on 1.60 ZEISS ClearView FSV lenses compared to ZEISS Spherical FSV lenses. Average of -5, -3, -1, +1, +3, +5 D with and without cyl -2 D. Maximum reduction of 49% of -5.00 D with and without -2 D cyl for minus lenses. Maximum reduction of 25% of 5.00 D with and without -2 D cyl for plus lenses. Quantitative analyses by Technology & Innovation, Carl Zeiss Vision GmbH, DE, 2020.

[4] Study participants were asked to rate how important different aspects (“price”, “to see clearly across the entire lens”, “easy to adapt to”, “comfortable vision across the entire lens”, “aesthetics”, “available coatings”, “matches the frame”) are for them, when choosing new spectacle lenses. Wearer trial comparing 1.60 ZEISS ClearView FSV and 1.60 ZEISS AS FSV in a laboratory setup and in everyday life. N=20 study participants. Technology & Innovation, Carl Zeiss Vision GmbH, DE, 2020.

[5] Measurements of lens thickness on 1.60 ZEISS ClearView FSV lenses compared to ZEISS spherical FSV lenses over a range of prescriptions (-5, -3, -1, +1, +3, +5 D with and without cyl -2 D). Maximum reduction of 16% for center thickness of +5.00/-2.00. Quantitative analyses by Technology & Innovation, Carl Zeiss Vision GmbH, DE, 2020.

5 Eyewear Trends for 2022: Matching the Right Frames and Lenses to your Patients’ Needs

The eyewear industry has seen a lot of changes over the past few years, and it seems like 2022 will be no different. So let’s take a look at what eyeglass frames and eyeglass lenses are popular in 2022! The eyewear trends that you should keep an eye out for are: rimless eyeglasses, cat-eye frames, wrap-around sunglasses, marbled eyewear, and geometric frames.

Eyeglass frame and lens combinations to keep an eye on this year.

Rimless eyeglasses with titanium frames

Perfect for patients who want a sophisticated and modern look, without the distraction of frames on their face. Rimless eyeglasses also tend to be very lightweight, which is great if they wear glasses all day long. Titanium is incredibly durable and can withstand a lot of wear and tear, making them perfect for people who are hard on their eyewear.

For the finest style and vision combination, combine it with ZEISS SmartLife progressive or single vision lenses.

Cat-eye frames with blue light blocking lenses

Cat-eye frames are making a comeback in 2022, and it didn’t hurt that they looked fabulous on Cruella. They’re perfect for people who want a retro look. Cat-eye eyeglasses are also very flattering on most face shapes.

If your patients are like the rest of the world, they’re probably staring at a computer or phone for most of their day. For a fashionable and healthy pair of glasses, add blue-light blocking lenses to their cat-eye sunglasses. ZEISS BlueGuard Lenses block blue light with less unsightly blue glare.

Wrap-around Sunglasses

If your patients are looking for eyewear that can protect their eyes from the sun’s harmful UV rays, wrap-around sunglasses are the way to go. Besides being stylish, as seen here in the Matrix, they provide more UV protection for the sides of their face and also shield their eyes from wind and debris.

Luxury, style, and vision come together in this exquisite pair of prescription sunglasses when paired with a high-quality pair of sun lenses that provide 100% UV protection, scratch resistance, and anti-glare coating.

Marbled eyewear with self-tinting lenses

If your patients are looking for eyeglass frames that are uniquely theirs, check out marbled eyeglasses like these. They come in a variety of colors and can be customized to any preference. If you want to add some color or dimension to the eyeglasses, these unique glasses should definitely be on your radar!

These glasses can be used in a wide range of light conditions, thanks to the addition of self-tinting lenses like these, without sacrificing style.

Geometric frames with digital lenses

The 70s-inspired frame shapes, like these, with a hipster twist are back in style. They come in a variety of shapes and sizes, such as rounds, rectangles, ovals, and squares, so you can find the perfect pair for any face shape and style.

Digital lenses are designed for patients in the 25-45 age range who frequently use their mobile phones and tablets. Designed for all-day wear, digital lenses are ideal for patients who are constantly on their phones or computers. They help to reduce eye strain and fatigue by providing a wide, clear distance zone with a comfortable near zone for stress-free viewing of digital screens.

Find the pair that works best for you

So, which eyeglass frame and lens combination will you reach for in 2022? Whichever you decide, make sure that it provides the best protection and style for your patients’ individual needs. Additionally, all of the lenses should include sunglass-level UV protection, which all clear ZEISS lenses have.

Are you an eye doctor and want to learn more about ZEISS partnership? Click here.

Are you a patient and would like to find an eye doctor near you with these types of lenses and frames click here.

ZEISS DuraVision BlueProtect UV Plano

Vision Products and Equipment

Why you should offer ZEISS DuraVision BlueProtect UV lenses to your patients.

With home office work becoming the norm, your patients have probably heard of or used blue light blocking glasses, even if they don’t require a prescription.

Blue light is just about everywhere and it’s both good and bad. In nature the blue light from the sun helps us to stay alert and awake. In much of the world today, we almost continually use some sort of digital device well into the night, surrounding ourselves by sources of blue light. These sources include LED lights and electronic screens from our phones, tablets, televisions…you name it.

According to a recent Harvard Health study¹, blue light exposure at night alters our body’s circadian rhythm causing sleep disturbances and may contribute to the causation of cancer, diabetes, heart disease, and obesity.

Melatonin, a hormone that influences circadian rhythms, is suppressed when humans are exposed to light. Light exposure at night is one reason so many people don’t get enough sleep.

Any kind of light can suppress melatonin, but blue light does so more powerfully. To support this theory, Harvard researchers compared the effects of 6.5 hours of blue light exposure to green light exposure. Melatonin was suppressed about twice as long with the blue light compared to the green light. This resulted in twice as much circadian rhythm shifting (3 hours vs. 1.5 hours). ²

This same study revealed that when circadian rhythms are shifted, even gradually, several negative health effects can arise. In the study, blood sugar levels increased, and leptin levels decreased. Leptin is the hormone that makes people feel full after a meal.

These are just a few reasons why it is important to discuss blue light with your patients.

Better Sleep Quality

Sleep is one of the pillars of optimal health, but people are sleeping much less than they did in the past. Poor sleep is linked to heart disease, diabetes, depression, and obesity.³ The use of artificial light and electronics at night may contribute to these problems and many studies suggest blue light disrupts the brain’s natural sleep-wake cycles, which are crucial for optimal health.¹²

Digital Eye Strain Syndrome

With so many people working in front of computers, including students, it’s important to understand the relationship between blue light and eye strain.

While there is no evidence that using digital devices will cause permanent eye damage, staring at them can cause discomfort.

Digital Eye Strain Syndrome describes the itchiness, dryness and blurriness that some of us experience after staring at blue-light emitting screens for too long. It can also cause headaches and neck strain.

UV Protection

Working indoors doesn’t usually cause concern about UV-related eye damage, but there is some risk. UV light can penetrate windows. The good news is that ALL ZEISS lenses have sunglass-level UV protection.

How ZEISS DuraVision BlueProtect Plano lenses can help.

Fortunately, there is a simple solution.

ZEISS DuraVision BlueProtect UV lenses, both Rx and Plano can help filter out potentially dangerous blue light. Blue light lenses have become increasingly popular among everyone, including kids and adults that do not require a prescription. Whether they’re concerned with eye health or sleep, you now have a solution.

Trust ZEISS to provide solutions for all of your patients’ needs.

Would you like to learn more about ZEISS DuraVision BlueProtect UV technology? Click Here

To find an eye doctor near you, visit www.zeiss.com/FindAnEyeDr

If you’d like more information on becoming a ZEISS partner or if you’d like to be contacted by a ZEISS representative, please visit Become a ZEISS Partner

¹health.harvard.edu/staying-healthy/
²pubmed.ncbi.nlm.nih.gov/21300732/
³pubmed.ncbi.nlm.nih.gov/19910503/
¹²pubmed.ncbi.nlm.nih.gov/23814343/
*ncbi.nlm.nih.gov/pmc/articles/PMC2398753/
*ncbi.nlm.nih.gov/pmc/articles/PMC2717723/