Transitions lenses comparison and features as prescription sunglasses.

transitions lens types

Don’t let your eyes strain in varying light conditions have them intelligently adjust in transitions lenses (the transitions logo is a registered trademark ).
Transitions is a registered intelligent technology and transitions technology development  meant  light control is a trademark. Ensure you use genuine lenses. To trademark the transitions logo involved developing technology and transitions light features tested and verified by uses throughout the globe.

Often used for their light changing photochromic performance by changing  between clear and various darknesses in the presence of ultraviolet (UV) radiation, such as when exposed to sunlight,indoors and at night.
Like skin, our eyes need sun protection. Damage is often spotted in eye exams and can contribute to vision problems.
Photochromic performance is influenced by temperature uv exposure and lens material.

Transitions lenses provide UV400 protection, % reduction  of 100 UVA and UVB ,helping to preserve your long-term eye health.
UVA are the most prevalent and penetrating rays during all daylight hours throughout the year causing wrinkles, sun spots,skin cancer
UVB causes more sunburn but more prevalent in the middle of the day
UVC rays are absorbed by the ozone layer and generally don’t reach the earth’s surface. there are germicidal disinfectant uses of man-made UVC radiation  such as in hospital settings.

Sunscreens have different physical filters and chemical absorbers for different UV bands

We have one of the highest levels of UV exposure and highest rates of skin cancer in the world.
You  can still get burnt on cool or cloudy days from from UVB and HEV (high energy visible)though lower energy than UVA rays, they penetrate deeply into the eye and can cause retinal damage.

UV levels are proportionally greater in higher altitudes distance to the earth’s equator 
UV and HEV levels are greater in wide open spaces, especially when highly reflective surfaces are present, like snow and sand. 
UV damage can also depend upon a persons medications such as tetracycline, sulfa drugs, birth control pills, diuretics and tranquilizers,which can increase the body’s sensitivity.

Often backup pairs of glasses such as transitions are recommended as UV damage can be seen around the eyes and within the eyes.  
​The cost effective,convenient popular UV protective solution with a love them or exchange them policy with different styles,shades and tints though not all are polarised and ideal for driving due to windscreen UV blocking darkening.
Some brands are quicker acting than others and more temperature dependent.

uv index
Based on the the ozone forecast,and the incident angle of sunlight determined by latitude, day of year, and time of day  the strength of UV radiation at ground level is calculated as energy frequency and wavelength are mathematically related. 
​UV RAYS DAMAGE MORE THAN JUST SKIN

You can’t see or feel UV rays, but they’re present all year long. And just like your skin, your eyes need protection.
UV levels and sun protection times are included in our local Bureau weather forecast.
Sun protection measures are absolutely recommended when the UV Index is 3 and above but you still get burnt on cool or cloudy days
Your eyes without the transitions adaptive technology have to constantly adjust to  changing light and this adds to  eyestrain and fatigue. 

Digital devices have now been shown to have negative impacts on comfortable vision whereas the danger from harmful uv rays has been long understood.
Damage from UV exposure is cumulative, building every time your eyes are exposed to the sun. 
Research shows that UVA and UVB rays may contribute to short-term vision impairment as well as to potentially serious age-related eye problems and disease of the eyes, including cataracts. UV is known to  contribute to macular degeneration, the leading cause of blindness in people over 60 years old.
Importance  of Vitamin D and UV
​A balance is required between excessive sun exposure which increases the risk of skin cancer and enough sun exposure to maintain adequate vitamin D levels which is beneficial for bone development and maintaining musculoskeletal health.
Dietary sources of vitamin D are unlikely to contribute enough of an adult’s vitamin D requirements
Vitamin D  levels can decrease when the UV Index is lower.
​Transitions lenses Signiture series 7 lenses  filter 1.4 x  more harmful blue light than a basic clear lens Indoors. Outdoors, filter more than 8 x  more harmful blue light than clear lenses. They are called light intelligent lenses as single vision transitions or more complex designs to enhance contrast in all conditions.
When Transitions  lenses are exposed to UV light, trillions of photochromic molecules in the lens begin to change structure and  darken.

They are manufactured under heat to draw the photochromic dye into the lens itself. This patented Chromea7 dye technology allows for a lens that is more responsive to UV,light and temperature .  After the imbibing is complete, a scratch-resistant coating is applied to the surface of the lens. Sometimes  the photochromic technology is on the lens surface depending upon the material. Uniform tint color is maintained regardless of lens thickness differences caused by lens prescriptions. 
transitions indoor
transitions
All Transitions lenses can be Multicoated, but not tinted as it may damage the photosensitive coating

Transitions lenses except for drivewear are only activated by UV radiation, obviously the sun is the biggest source but there are other sources including computers, cameras, arc welders etc so in summary any source that emits radiation will affect Transitions. Headlights, unless they emit UV, they have no effect.
Seven generations of transitions lens types have evolved since the first in  1990   lenses were produced-License by transitions optical – trademarks of transitions optical limited.
 
Drivewear lenses have unactivated  35% polarized tint and will go around 90% dark when activated. It will work on a combination of UV radiation and Blue light so it will work in the car. 
Drivewear uses blue light as well as UV so it will go darker than the Transitions Signature series and are designed and optimized for use in daylight with sunlight response.  They should not be used for night driving.
Transitions light intelligent technology  and light under control intelligent lenses are trademarks as is the transitions logo transitions light intelligent technology 
transitions
transitions protection
 Popularity
  • 1  Signature  Because  of its indoor clarity. Now comes in 3 iconic colors and 4 Style colors. 
  • 2  Xtractive   Being due to in car activation helping  behind the windscreen of car. Slight hint of tint indorrs. 
  • 3  Drivewear  Designed for driving.
  • 4  Infinite (Younger Optics)    Expect long term it will be bigger than Drivewear owing to colour cosmetics
  • 5  Vantage  Variable Polarised lens. Little bit slow to fade back to clear compared to Signature and Xtractive. Slight hint of tint ondoors.  


​Only Transitions XTRActive and Transitions Drivewear contain photochromic dyes that activate in visible light.
XTRActive series filter at least 2 x more harmful blue light than clear lenses, and 8 x more harmful blue light outdoors.

Vantage series filter at least 2 x more harmful blue light indoors than clear lenses, and over 6 x outdoors.
Let us help you choose in single vision and multifocals.

Choose from 7 photochromic colours to match your favourite frames and lifestyle. Grey, Brown, Green, Amethyst, Sapphire, Emerald and Amber.

lenses brown
lenses brown
lenses brown
ess transitions
esstroffer

As the light in your life constantly changes, so should your lenses. The new  colour styles come with constantly adjusting technology that has been tested in over 200 lighting conditions across the globe and 1,000 wearer scenarios.

transition lenses
transition signature line of lenses
transition lenses

​Kids Eye protection has to come from the beginning of life and they are available in all kinds of frames, for all ages. ​​As you get older, your lens naturally absorbs more UV to protect your retina. Kids under five have particularly vulnerable eyes, so it’s especially important that they’re protected against UV rays by the correct lens material as they wear their glasses in all their different situations.

Trademark of the transitions logo comes with a love them or exchange them guarantee
Transitions light intelligent lenses technology means transitions light automatically adapt. Responding to the light around you, they intelligently change from clear to dark when you go outdoors and back to clear when you return inside. Ask us how Transitions lenses can make your life hassle free!  Want to make a style statement? Hassle-free, smart technology. Show off your true colours!  See us in store to choose your colour.

 The tint of a sunglasses lens has no effect on UV protection, but does change the amount of light that goes into your eye but the materials are protective. People with blue eyes are more at risk of UV damage. Blue eyes contain less of a protective pigment called melanin, which makes UV exposure more of a risk for people with blue eyes than it is for those with darker eyes.
UV levels are more intense at both higher altitudes and in tropical areas near the equator. The further you live from the equator, the less risk there is.
Frequent exposure to UV can lead to the development of cataracts and possibly macular degeneration, which can both impair sight.​​

Transitions  XTRActive contain a specially designed photochromic dye that responds to both UV light and natural (visible, clear or white) light, so they are able to moderately adapt in the car. ​ The glass in car windscreens blocks more than 99% of UV light, so most photochromic lenses do not provide sufficient darkening in the car.
Make a style statement
All the features and benefits of Transitions XTRActive technology are available with on-trend style mirror finishes of 2019 transitions optical limited.
Transitions XTRActive is the darkest Transitions lens, which means the mirror effect is more pronounced and dramatic
Primarily an outdoor lens that can be worn indoors
Slight reflective mirror coating indoors on both the front and back lens surfaces

xactive mirrors

Transitions Vantage  series has a variable level of polarization efficiency.The photochromic molecules in transition vantage lenses  darken and align (to create polarisation ) according to amount of UV. Transitions Vantage is designed to be an everyday lens (mostly clear indoors and at night), and is a “variable polarization” lens, which means the level of glare-blocking polarization changes depending on UV exposure.

TEMPERATURE AND ITS EFFECT ON PHOTOCHROMIC TECHNOLOGY
 When the lenses become cold the molecules begin to move slowly.  This means that it will take somewhat longer for the lenses to adapt from dark to clear. When the lenses become warm the molecules speed up and become more reactive.  

Transitions  Drivewear polarized  incorporate photochromic dyes designed to shift between a lighter and darker density by reacting to changing light conditions as most windscreens have UV absorbers.  If you notice glare when you drive, use a specific pair kept in the car for driving . 

drivewear
Drivewear is designed especially to give the best possible vision under all daytime driving conditions. The technology breakthrough on this lens is that it that darkens when exposed to both UV and visible light.​Transition lenses  are very popular with people who just want one pair of glasses but dedicated sunglasses or driving glasses have undeniable benefits. ​ Prescription  Transitions Drivewear adaptive lenses enhance the driving experience by combining  NuPOLAR Polarisation eliminating  glare with the Transitions photochromic technology that adjusts the color and tint of the lenses as light conditions change.
Transitions Drivewear is a sunglass lens that has three distinct color/darkness states designed for daytime driving. It is always polarized (via polarizing film), which means it is not meant to be worn indoors, and should not be worn for night driving. It uses both UV-activated and visible-light-activated Transitions photochromic technology, which means it is able to activate even when behind the windshield of a car. Drivewear transitions is  the superior driving lens owing to the science of colour theory that is incorporated into the lens. Saying that, the colour does prove an issue for some despite vision being  sharper and  better depth perception the cosmetic appeal of the gray INFINITE version has been developed.
NuPOLAR Infinite Gray​ NuPolar Infinite is a polarized variable tint prescription sun lens that naturally responds to light essentially a grey version of the Drivewear Transitions product. Infinite would be ideal for someone who drives and doesn’t like the contrast colour of normal Drivewear. ​
•   Lightest state – 60% tint.
•  Darkest state – 91% tint.
•  Blocks blinding glare.
•   Polarization efficiency – 99%.
•  100% UV blockage.
•   Reacts quickly  to both UV and  visible  light.
•    Activates moderately behind the  windscreen.*
•   Affordable photochromic polarization.•    
*Degree of photochromic activation dependent on windscreen’s total light transmission and UV light absorption characteristics. 

Sunglasses for any occasion

We have a large range of fashion,sports prescription and non prescription sunglasses and clip ons to suit your specific needs as well as lenses for kids.

baobab
shibuya
deviles thorn glasses

Ultraviolet (UV) radiation is invisible energy produced by the sun. The UV radiation that reaches us is made up of UVA and UVB rays which are able to penetrate the skin and cause permanent damage and eye problems such as cataracts.

clip on glasses

• UV A (320 – 400 nm) penetrates deeply into the skin causing  damage to cells ,wrinkling, blotchiness 

• UVB (290 – 320 nm) penetrates into the top layers of the skin/eye causing damage to the cells. UVB is responsible for sunburn – a significant risk factor for skin cancer, especially melanoma.

WHY PROTECT YOUR EYES FROM UV?

 Ultraviolet light is present even when it’s not sunny,refecting off glass, water, the ground, and even off the back of your spectacle lens. 
UV damage is cumulative and will build up over time without you knowing so is an important eye care issue.

Over time UV radiation can lead to eye health issues such as cataracts, pterygium and eye cancer. UV radiation can damage the delicate skin around your eyes causing premature aging and wrinkles
Anti reflection coatings can help transitions performance.Most lenses include anti reflection coatings.

reflections cause
EYE-SUN PROTECTION FACTOR

Often the protection against UV label just makes reference to the blocking UV radiation property of the lens material itself.
Up to 50% of UV penetrating the eye though is reflected of the back surface so the  E-SPF index takes into consideration the degree of UV protection, either by % transmited through the lens and % reflected off its back surface.

e spf

​The Eye-Sun Protection Factor (E-SPF)  is an index showing the overall UV protection provided by a lens. It is an objective rating system developed by Essilor International which can rate any lenses UV transmission and also importantly its back surface reflectance  reduction.

The higher the E-SPF, the better the UV protection.  Wearing a lens with an E-SPF value of 25 means that your eye is 25 times better protected than without a lens. (The E-SPF excludes direct eye exposure from around the lenses) so wrap is important.