Are you looking for a new, favourite pair of glasses? Ones that will give you excellent vision in any light day or night? With self-tinting lenses that will give you 100% protection from the sun and harmful solar UV rays and will do away with having to change back to your conventional glasses? As of now, ZEISS is also offering the latest generation of self-tinting lenses in the well-known ZEISS quality. And the best thing is that PhotoFusion high- and mid-index self-tinting lenses turn up to 2 times faster* from dark to clear than previous photochromic lenses offered by ZEISS.
*Average performance for 1.67, 1.6 and polycarbonate lenses. Performance will vary according to material, temperature and light conditions.
Also known as photochromic lenses, self-tinting lenses have been around since the 1960's. The small, yet significant discovery made by chemist Stanley Donald Stookey and his colleague, William Armistead, made it possible to have spectacle lenses that react to UV rays remarkably well. Ever since then, a lot has happened in view of the quality and performance of self-tinting lenses and they are extremely popular amongst many people who are dependent on their glasses and constantly going indoors and outdoors.
With self-tinting lenses, the annoying need to change glasses is a thing of the past. Latest market research by ZEISS show that spectacle wearers however have very clear criteria regarding the quality and performance of self-tinting lenses:
These requirements were taken into account in the development of ZEISS PhotoFusion. In just 15 to 30 seconds, PhotoFusion high- and mid-index lenses will darken in bright light or in the sun*. Indoors, they clear again in about 5 to 10 minutes*. That is the reason why PhotoFusion is a leader among self-tinting lenses. And of course, it offers 100% protection against solar UV rays as a standard feature.
*Average performance for 1.67, 1.6 and polycarbonate lenses. Performance will vary according to material, temperature and light conditions.
A further milestone in 160 years of ZEISS expertise; as well as anti-reflective coating and customised progressive lenses, the original self-tinting plastic lenses were first launched by the Carl Zeiss Vision brand American Optical in 1983.
A chemical reaction involving certain molecules is used as the basis for self-tinting lenses. The secret behind PhotoFusion high- and mid-index self-tinting lenses is photo-active molecules which react quickly to changing light. When there are changes in the exposure to light, the molecules in the lens change, darkening or clearing the lens. By combining these molecules with ZEISS lenses, it has been possible to design a new generation of powerful self-tinting lenses.
Good for you! PhotoFusion is available across a wide range of designs, brands and materials.. This means that PhotoFusion spectacles wearers do not have to miss out on any offers or quality aspects for relaxed vision: more visual comfort, better quality of life.
How much blue light do we need? And how and when should we be protecting ourselves against it?
BETTER VISION asked the frame manufacturer LINDBERG what makes LINDBERG sunglasses so special.
A look at some of the coolest new colours for summer 2013
ZEISS' coloured lenses really set the mood!
Speed, changing light conditions and airborne particles present special challenges to glasses for cycling: here are some tips from BETTER VISION.