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Presenting new technologies and advancement in spectacle lens materials CET approved C-36183 For Trivex Lens Specialist Practices, UK Harder, stronger, clearer. A live webinar presented by the ABDO College in Canterbury, UK in association with PPG Optical Materials
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Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Jul 13, 2020

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Page 1: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Presenting new technologies and

advancement in spectacle lens materials

CET approved C-36183

For Trivex Lens Specialist Practices, UK

Harder, stronger, clearer.

A live webinar presented by the ABDO College in Canterbury, UK in association with PPG Optical Materials

Page 2: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Dora Plisic

Trade Manager

PPG Optical Materials

Kevin Gutsell

FBDO (Hons) SLD

ABDO

Keith Cross (guest speaker)

Director, Rx Technologies, R&D PPG

Optical Materials

• Introduction

• Timeline of lens material technology developments

• Overview of lens materials technologies

• Lens material properties and patient benefits

• Developments in lens design and coating technologies

• British consumer trends

• Summary and Q&A

Course Outline

Page 3: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

How has technology overall

evolved over the last 60 years?

Page 4: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

1937 1977 1983 1991 2001 2007

2G: 1st GSM network

3G: 1st country to launch - UK

Technology Evolution: The Telephone

Page 5: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Technology Evolution: The distribution model

2 years contract with mobile phone network providers

New contract is signed

New mobile phone platform

is provided

Page 6: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

How has technology in the ophthalmic lenses evolved over the last 60 years?

Page 7: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Anatomy of an ophthalmic lens

Patient

comfort

Page 8: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Technology Developments in Lens Materials

1950’s CR-39® lens development

begins

1970’s FDA impact test regulation

increases use of CR-39®

lenses 1980’s

2000’s Trivex® lenses introduced

Prescription Distribution

85% of Rx’s in Western Countries are

in the range of +/-3.00 D

Polycarbonate lenses become

more popular in U.S.

Page 9: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Technology Developments in Lens Materials

1980’s

1990’s Additional developments in high

index lenses (1.60, 1.67)

Mid Index (1.56, 1.60) lens

development begings

Prescription Distribution

In the Pacific region, prescriptions are

higher from +/-3.00 to +/-6.00 D

2000’s Very high index lenses

development (1.74)

Page 10: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

What is a lens material made from?

Page 11: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Lens material overview: CR-39®

Chemistry

•Organic (Carbon-based)

•Properties:

• Impact resistance better

than glass

• High resistance to heat

• High Abbe number

• Lighter than glass

Structure

•Thermoset

•Highly cross-linked

Page 12: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Lens material overview: Polycarbonate

Chemistry:

•Organic (Carbon-based)

•Properties:

• High Impact resistance

from 90° angle only

• Low resistance to heat

• Low Abbe value

Structure:

•Thermoplastic

•Long independent chains

•Not cross-linked

Page 13: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Lens material overview: High Index

Chemistry:

•Organic (Carbon-based)

• Urethane backbone with added sulfur to

increase refractive index

•1.60: approximately 30% sulphur

•1.67: approximately 40% sulphur

•1.74: approximately 60% sulphur

•Properties:

• Thinner lens

• Lower optical performance

• Higher density

Structure:

•Thermoset

•Highly cross-linked

Page 14: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Lens material overview: Trivex®

Chemistry:

•Organic (Carbon-based)

•Urethane backbone enriched

with Urea (Nitrogen)

•Properties:

• High Impact resistance

• High Resistance to heat

• High Optical performance

• Lightest prescription lens

material

Structure:

•“Quasi-Thermoset”

•Slightly cross-linked long

chain structure

Page 15: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

How does this translate

to the overall performance

properties of the lens?

Page 16: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Patient

comfort

Page 17: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

60

50

40

30

1.74

(33)

Trivex

(45)

CR-39

(58)

1.67

(31) Polycarbonate

(30)

1.60

(40)

Clearest

17

Clear Vision: Abbe Number

The Abbe Number (V-value) is a measure of the dispersion exhibited by the material. The higher

the Abbe Number the more accurately a lens aligns the spectrum of light waves that pass through

it.

Page 18: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Heaviest Lightest

Trivex 1.11 g/cm3

Polycarbonate

1.20 g/cm3

1.60

1.30 g/cm3 CR-39

1.31 g/cm3

1.67

1.36 g/cm3

1.74

1.47 g/cm3

1.10

1.20

1.30

1.40

1.50

Lightweight: Density

Density expresses the weight of the material. The lower the density, the lighter and more

comfortable the lens will be for the patient.

Page 19: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Thin: Refractive Index

1.65

1.60

1.55

1.50

1.70

1.75 High Index

1.74

CR-39

1.50

Polycarbonate

1.59

High Index

1.67

Mid Index

1.60

Trivex 1.53

Refractive index is the ratio of the velocity of light in vacuum to that in the material. It tells

us how fast light travels through a material.

Page 20: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Ultra violet (UV) radiation is known to cause skin cancer and protection of the eyes from UVA and UVB is considered essential for every patient.

Eye Health: UV Protection

400

390

380

350

High Index

1.74

CR-39

1.50

High Index

1.67

Polycarbonate

1.59

Mid Index

1.60

UV cut- off

(nm)

Trivex 1.53

Page 21: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

21

Brittle Resilient

Polycarbonate

>700 in-lbf

1.60

53 in-lbf CR-39

31 in-lbf

1.67

56 in-lbf

300

200

100

0

>700 Trivex >700 in-lbf

Safety & Protection: Durability

Page 22: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

How do these features

translate into patient benefits?

Page 23: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Lens is not one feature it is the combination of the features to insure patient comfort

Patient Comfort •80 percent of what children learn in their first 12 years comes through their eyes

• UV levels are three times greater in summer than winter • 20% of cataract cases are due to UV rays • The most of UV damages to eye happen prior to the age of 12 as the eye is not mature and fully protected against UV

• Rimless frames require durable lens that wont break or crack

• Seniors have aging and thinner skin on their nose

• 64.5% of adults are physically active

Page 24: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Potential benefits to ECPs

Page 25: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

HIGH END

MID-RANGE

BASE / ENTRY

ADC / CR-39® Global

Trivex®

1.56 Mid-Index

Asia

Polycarbonate US

1.60 High-Index Europe 1.67 High-Index

Europe & US

1.74 High-Index

Europe & US tribrid™

Lens materials positioning

DIOPTRES 0.00 +/-3.0 +/-7.00

Page 26: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Knowledge is power

• Understanding the patient

– Understanding patients needs

– Understanding patients lifestyle

– Understanding patients expectations

• Repeating the benefits of recommended lens

• Educating patients about lenses

• Using regular mailings to keep in touch with the patient.

Page 27: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Lens materials - market share UK

HIGH END

MID-RANGE

ENTRY

0,58%

20,12%

3,6%

1,80%

73%

Source: Strategy with Vision, market data for Y2011

Page 28: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Lens design - market share UK

21,32%

11,27%

67,41%

40%

60%

Source: Strategy with Vision, market data for Y2011

Page 29: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

HIGH END

MID-END

18,80%

20,30%

Lens coatings - market share UK

17,40%

43,40% ENTRY

Source: Strategy with Vision, market data for Y2011

Page 30: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Have our dispensing trends

evolved with the technology?

Page 31: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

HIGH END

MID-END

18,80%

20,30%

To summarize - market share UK

23,72%

73%

ENTRY

40%

0,58%

60%

60,80%

11,27%

Source: Strategy with Vision, market data for Y2011

Page 32: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Consumer trends

Page 33: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is
Page 34: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

• Britain has become a gadget-obsessed nation, watching more television

online, spending more on internet shopping and using smartphones and

tablets to access the web more heavily than any of the world's leading

economies, according to new research.

• The British love of the latest devices has even seen the UK overtake Japan in

mobile internet use, according to the report from media regulator Ofcom,

which compares data across 17 countries, including the US, China, India,

Russia, Brazil, Ireland, Sweden, France and Germany.

• Mark Sweney

• The Guardian, Thursday 13 December 2012

UK is becoming one of the worlds most web and gadget obsessed countries according to the

latest survey results from Ofcom's annual communications market report.

Page 35: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

• Britons are biggest online shoppers in developed world

• Britain is the biggest online shopping nation in the developed

world, with almost two-thirds of adults using the internet to buy

goods or services.

• By James Hall, Consumer Affairs Editor

• 2:17PM GMT 01 Feb 2012

Page 37: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Questions and Answers from live Webinar

ABDO College, 30th April 2014

Page 38: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Q: With regards to Tinting Trivex lenses I understand there can be concerns with

A/R consistency, pinholes and bubbling. Has this now been resolved in 2014? Does

tinting affect impact resistance?

A: Trivex lenses tint best when combined with a tintable hard coating as the tint is

more readily absorbed into the coating. Trivex material itself can be difficult to tint

but again if combined with the proper tintable hard coating it may be able to be

tinted. As far as compatibility with AR coating – Trivex is compatible with all AR

coatings and no manufacturers have reported any issues or problems. Any

“bubbling” or “pinhole” defect is most likely related to the tinting process and the

lens not being tinted properly. When tinting Trivex and then applying an AR

coating – labs generally have to over tint the lens as some of the color is removed

during the AR process so in order to match the requested color labs often times

have to add more color than needed and gauge the amount the will be released

during the additional processing and sometimes because of this the lens may be

tinted more than once and this could affect the tintable hard coating so any

defects seen would be a result of the tinting process and note specifically related

to the Trivex material. Tinting does not affect impact resistance.

Page 39: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Q: I was surprised to hear that the UV blocker wears off. How would I explain to my

patient that it wears off and cannot be replaced if lenses are still in good condition

and prescription has not changed, and it cannot be replaced. Therefore not

protecting the eye from UV.

A: Whether or not the UV protection can be replaced is dependent on what other

coatings are on the lens – if it is a lens with no other coatings than it may be able

to be re-applied. I would mainly be concerned with CR-39 or plastic lenses with

no other coatings except the UV absorber – In other lenses and coatings the UV

protection is part of the lens and should not wear down. With CR-39 or plastic

lenses in which a UV dye was used – this is the case where as it may wear off

over time or reduce its efficiency. In these cases I would simply ask the customer

to come back every 6 months to have their glasses re-checked for proper

absorption efficiency

Page 40: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Q: How long does it take for the UV coating to decrease to a level that it becomes

ineffective?

A: UV coatings or dyes can wear off over time but it is dependent on many

conditions such as amount of exposure to UV, environmental issues, types of

cleaners or solvents used etc…Unfortunately there is no specific answer to this so

I would recommend asking customers to bring back their glasses to have the UV

absorption re-tested and validated periodically – perhaps every 6 months.

Page 41: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Q: With relation to Trivex lenses, is there any drop off in UV protection over time as

there is with UV coatings?

A: Trivex lenses have UV protection build in the material/monomer. That means

lenses are produced/cast with the UV protection and therefore it won’t change

over time. Trivex lenses will maintain the UV protection over the intended life of

prescription spectacles. UV protection decreases over time only if it is added to

the lens through a coating, which is not case with Trivex lenses.. Any lens material

with UV protection built in should be fine over the life of the prescription –

approximately 2 years or so. As with anything, there are so many factors that

could contribute to a reduction in the efficiency of the protection but again there

shouldn’t be any issue with the effectiveness over the life of the prescription and I

would say this is the case with all lens materials with UV protection built in.

.

Page 42: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Q: Can you clarify the best materials for rimless glazing - given that many

manufacturers will recommend Polycarbonate as the material of choice even

though it has poor optical performance, Is Trivex material more suitable for rimless

glazing than 1.6, 1.67 or 1.74?

A: Trivex material is considered one of the best materials for rimless glazing given

the exceptional impact- and chemical-resistant features of the material as well as

its outstanding optical performance. Trivex lenses are extremely durable and

tough enough to withstand the stress associated with rimless spectacles, resisting

cracks and fractures to which other lenses are sometimes susceptible. For

patients with stronger prescriptions, lens materials such as 1.60 and 1.67 can be

used for thinner lenses in rimless spectacles, but they may not be as resilient as

Trivex lenses.

.

Page 43: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Q: Safety Specs: Forgive me if I am out of date on Safety specs! Not an everyday

dispense but, given that Trivex material comes via Apache Helicopters (reasonably

safe then!) should we as a profession, be suggesting to safety labs that Trivex

lenses be dispensed in preference over Polycarbonate insofar as impact-

resistancy?

A: Trivex lenses should definitely be considered for safety applications. Trivex

lenses and polycarbonate lenses feature similar impact resistant performance

properties and may be considered equivalent with regard to impact protection.

However, polycarbonate lenses are not as chemically resistant as Trivex lenses

and can also be susceptible to stress-cracking.

.

.

Page 44: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Q: Dispensing children and sports goggles. Are you confident that the material is

as good as safe polycarbonate?

A: Trivex lenses should definitely be considered for children and sport goggles.

Trivex lenses and polycarbonate lenses feature similar impact resistant

performance properties and may be considered equivalent with regard to impact

protection. However, polycarbonate lenses are not as chemically resistant as

Trivex lenses and can also be susceptible to stress-cracking. In addition to the

durability, Trivex lenses offer optical clarity close to CR-39 lenses, while

polycarbonate lenses have the lowest Abbe value of all lenses.

.

Q: What thickness should the material be to consider it safe?

A: Trivex lenses can pass the most stringent spectacle impact performance tests

at . (Note that coatings may alter the impact resistance of any lens material.)

.

Page 45: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Q: It's a great alternative to CR39 but how about thickness? Lots of patients even

as low as -3.00 want their lenses as thin as possible.

A: While patients say they want their lenses as thin as possible, opticians should

recommend a lens with the best overall performance. A combination of optical

performance, lightweight comfort, durability, UV protection AND thinness should

be the preferred recommendation for every patient. For example, consider a -3.00

D prescription – lenses made from Trivex material will be relatively equivalent in

thickness to a 1.60 lens and less than a bank card thicker than a 1.67 lens. Your

patients may not notice the difference in thickness but they would benefit from

improved optical performance, comfort and safety. If they could notice the

difference, they may be willing to accept a slightly thicker lens for the improved all-

around performance.

.

Page 46: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Q: Do you feel that as UK Opticians (DO's & Optoms), we can get blinkered in our

thinking and openness to new products and technologies?

A: Understandably there are a plethora of new lens products being launched on to

the market almost weekly (it seems). When you break this down into specifics of

design, material and coatings we see that very few new materials or concept in

materials has been launched for some years now. And in the past newer materials

have almost entirely been aimed towards lenses being thinner and to some

degree lighter. Much of this happening though at a time when frame shapes and

sizes have not necessarily required higher and higher index! Fortunately the

growth in rimless has meant tensile strength and brittleness has been 'front of

mind'. Polycarbonate and Trivex allow those whose prescription demands a lower

index yet the rimless requirement is different. The 'issue' as I see it is that

generally we recommend lens index simply on the basis of prescription and frame

size. We need to break this habit. This webinar has succeeded in getting people

talking about new technologies and it is this education and training which allows

the optician to comfortably detail and discuss with patients the benefits

.

Page 47: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Q: What are 1.76 lenses? Are they plastic? What is double aspheric?

A: 1.76 lenses are plastic lenses with high sulfur content (approx. 60%) to

increase the refractive index. “Double aspheric” refers to the geometry of a lens in

which the surface has been flattened in two axes (or meridians).

.

Q: Surely the overriding issue for use of new materials like Trivex will be cost -

recent Hi-index lens market growth will be due to huge cost reductions in recent

years.

A: Yes, it is true that cost certainly plays a significant role in the acceptance and

use of any new lens technology – including materials, designs, coatings and

treatments. However, the price of Trivex lenses today is more competitive with

other premium materials. In fact, Trivex lenses are less expensive than 1.67 and

1.74 lenses but offer a more complete set of benefits for patients with low to

moderate prescriptions (+/- 3.00 D).

.

Page 48: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Q: Is there any likelihood of Trivex pricing coming more into line with

Polycarbonate?

A: The raw materials and casting equipment used to manufacture Trivex lenses

are different from polycarbonate lenses. Trivex material is used almost exclusively

to manufacture ophthalmic lenses. Polycarbonate chemistry is used in many other

applications – such as plastic bottles, DVDs, and other injection molded products.

Therefore, polycarbonate chemistry benefits from economies of scale that Trivex

material may never achieve. That said, the price of Trivex lenses today is more

competitive with other premium materials. In fact, Trivex lenses are less expensive

than 1.67 and 1.74 lenses but offer a more complete set of benefits for patients

with low to moderate prescriptions (+/- 3.00 D).

. Q: Is Trivex material more expensive to produce than CR39?

A: Yes, Trivex material is a more expensive than CR-39 material. The raw

materials and casting equipment used to manufacture Trivex lenses are more

expensive than CR-39 lenses.

.

Page 49: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Q: Did your figures for conventional PAL's include non-individualised Freeform

lenses?

A: Yes, our figures classified progressive lenses surfaced using digital surfacing

equipment (freeform) where only the sphere and cylinder are applied as

“Conventional PAL”. At least one additional “individualized” measurement is

required to be classified as “Individual PAL”.

. Q: Is there a budget for manufacturers to market Trivex lenses directly to the

consumer, such as the approach taken by Transitions?

A: PPG will continue to work through our lens manufacturer, laboratory and ECP

partners to market the features and benefits of Trivex lenses to consumers. We

believe that the value of the ECP’s recommendation is ultimately greater than the

investment that we could make in an expensive consumer media buy. We are

looking to support our Trivex Lens Specialists with the recall letters they could

send to the patients, point-of-sale materials to make recommendation process

easier from the ECP to the patient and additional optician education opportunities

like our recent webinar with ABDO.

.

Page 50: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Q: Is there a simple non destructive test for identifying Trivex lenses when dealing

new patients wearing lenses of unknown material?

A: No, unfortunately there is not a simple, non-destructive test to identify Trivex

lenses.

.

Q: When referring to high-end entry, coatings and gadgets (upgrading mobile

phones etc.) you are considering the patients under the age of say 55 (I’m guessing

here). What with our huge over 60's population - most of whom claiming their NHS

sight test, there is an reduced inclination to invest in coatings etc. they are old

school patients who see specs as a necessity not an accessory. I do agree that we

should better promote new technology but 'selling' the extras is very tricky for a

substantial size patient sector. It would be interesting to see the age range of

patients used to collate data.

A: Yes, we agree that there is a type of patient who is not interested in a value-

added, higher performing product. We believe, however, that we should challenge

ourselves to allow the patient to make the decision with the best product offered to

them. If an optician declines to offer a value-added product to the patient, there is

no way of knowing whether or not that patient is interested. Research shows that

90% of consumers will defer to the recommendation of the eye care professional.

We should offer the best products for the patient and allow them to make the

decision.

.

Page 51: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Q: Does the panel feel that the seed can be sown in the test room by Optometrists

regarding new materials/coatings? The DO's can then advise more fully

A: Yes, it can be beneficial for the optometrist to discuss lens options and

recommendations with the patient in the exam room. However, a professional

optician who is knowledgeable about lens technologies and provides their expert

opinion can have as much influence on the patient’s decision. In fact, research

shows that 9 out of 10 patients will choose their eye care professional’s spectacle

lens recommendation

.

Q: Phone salespersons always give a hard sell to get consumers to upgrade. Do

you think ECP's are afraid of coming across as hard sellers and therefore alienating

our patients?

How would you handle to cost aspect of new technology, as many of the new

lenses are much more expensive?

.

A: Many patients are looking for an optician’s professional opinion. Instead of

“selling products”, opticians should consider that they are “recommending visual

solutions.” Provide the patient with the best recommendation possible supported

by a solid understanding of lens technologies and features and allow the patient to

make the decision.

.

.

Page 52: Harder, stronger, clearer. - ABDO...latest survey results from Ofcom's annual communications market report. •Britons are biggest online shoppers in developed world •Britain is

Q: Are Trivex lenses available with Transitions?

A: Yes, Trivex lenses are available in the latest Transitions lens technologies,

including Transitions Signature 7, Transitions XTRActive and Transitions Vantage

lenses. In addition, Trivex lenses are also available with photochromic

technologies from other lens manufacturers.

.

Q: As technology improves will there be a Trivex 2 which for instance will be

thinner, have a higher Abbe value? but still offer its basic advantages. Is there any

prospect of higher index in urethane Trivex type materials?

A: While not a replacement for Trivex lenses, PPG developed Tribrid lenses as an

extension of its performance lens material family. Trivex lenses provide the best

performance for patients with low to moderate prescriptions. Tribrid lenses feature

a higher refractive index (1.60) and similar optical performance and lightweight

properties

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Q: What is Tribrid?

A: Tribrid material extends the range of PPG’s premium, performance lens

material family. Tribrid lenses were developed using a hybrid approach merging

elements of the chemistry for Trivex lens material with traditional higher-index lens

chemistry. The result is a thinner lens that provides the patient with a superior

combination of performance benefits suited to patients with stronger prescriptions

within the range of +/-3.00 to +/-7.00 diopters. Tribrid material features optical

clarity (Abbe number 41), lightweight comfort (density 1.23 g/cm3), thinness

(refractive index 1.60), impact resistance (up to 5 times stronger than other 1.60

and 1.67 lenses) and 100% UV protection.

.

Q: Am I correct in thinking that Tribrid lenses have a RI of 1.6 and if so, how does

this differ chemically to Trivex lenses. Do they have superior optical properties

compared to their 1.6 counterparts as Trivex lenses does compared to CR39?

.

A: Yes, Tribrid lenses have a refractive index of 1.60. Chemically, Tribrid lenses

are similar to Trivex lenses; however, there are some key differences in the

chemistry that affect the overall properties of the lenses. Tribrid lenses have a 42

Abbe number; Trivex lenses have a 45 Abbe number and CR-39 lenses have a 58

Abbe number.

.

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Q: Which lens manufacturers offer Trivex lenses in the UK?

A: Trivex lenses in the UK from the following manufacturers/laboratories:

BBGR Berkshire Caledonian Eye Index

Jai Kudo Horizon Hoya LensTec

Norville Quincey Rawdon Riviera Rimless Glazing

Rodenstock Seiko Shamir Sinclair

Tant Younger Optics Waterside WLC

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Q: How large a base curve can Trivex lenses be made in? and will this material

eventually replace polycarbonate

A: Trivex lenses are available up to at least a +8 base curve but it always best to

check with your preferred lens supplier to get the most up to date availabilities and

offerings. As to whether or not Trivex will replace polycarbonate – I don’t think so.

I think both materials have a market segment. With polycarbonate you get an

impact resistant lens with poor optical quality and with Trivex you get not only an

impact resistant lens, you get the lightest weight lens available and much

improved optical performance over polycarbonate.

. Q: Can coatings be added to Trivex easily?

A: Yes, Trivex lenses are compatible with most coatings – including hardcoat, anti-

reflective, anti-fog, mirror, etc., coatings.

.

.

.

Q: Is Trivex purely 1.53 index?

A: Yes, Trivex lenses have a 1.53 refractive index.

.

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Q: Hi, sometimes you will get the odd patient who will not settle in a high index

aspheric lens. Would they still have the same issues with Trivex lenses as the Abbe

no. is nearer basic 1.5 CR39 and the optical quality is retained.

A: Trivex material may possibly resolve the optical performance issues that some

patient experience with high index lenses, particularly if the patient is wearing 1.67

or higher index lenses. The Abbe number for 1.67 lenses is 31 while Abbe

Number of Trivex lenses is 45.

.

.

Q: Is there any provision for this webinar to be made available as a video that could

be used as info/training for other staff members? Or even the powerpoint

presentation?

.

A: The video from the webinar and the PowerPoint presentation are available at

www.trivexspecialist.co.uk.

.

Q: What happens next to get the CET points ?

.

A: The list of opticians who registered their GOC number and watched the entire

webinar has been submitted to the ABDO who will then forward the info to GOC.

Once the CET point has been uploaded, GOC will email you notification that your

CET point is uploaded.

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Thank you

Dora Plisic Trade Manager PPG Optical Materials www.trivexspecialist.co.uk [email protected]

For Trivex Lens Specialist Practices, UK