They darken and lighten to varying degrees depending on the brand even with temperature.
The love them or exchange them guaranteed Transitions lenses allow for a combined indoor and outdoor solution so your eyes don’t strain in varying light conditions have them intelligently adjust.
They are often used for their automatic light changing photochromic performance 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 and can vary among brands
Transitions lenses provide UV400 protection, % reduction of 100 UVA and UVB ,helping to preserve your long-term eye health.
Australia has one of the highest levels of UV exposure and highest rates of skin cancer in the world and it is worth noting that 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. Kids eyes need protection as they are more at risk. You can’t see or feel UV rays, but they’re present all year.
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.
Damage from UV exposure is cumulative, building every time your eyes are exposed to the sun.
When Transitions lenses are exposed to UV light, trillions of photochromic molecules in the lens begin to change structure and darken.
Transitions lenses can be multicoated, but not tinted as it may damage the photosensitive coating
Seven generations of transitions lens types have evolved since the first in 1990 lenses were produced
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.
Choose from 7 photochromic colours to match your favourite frames and lifestyle. Grey, Brown, Green, Amethyst, Sapphire, Emerald and Amber.
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.