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In the “olden days” – circa two decades ago, a virtual eternity in the eyewear industry – a company called Transitions® popularized a unique form of lens coating.
This coating performed the seemingly miraculous task of automatically darkening the lens in the presence of ultraviolet light and returning to a perfectly clear state in the absence of UV light. With this coating your regular prescription glasses would essentially transform into prescription sunglasses – only when you needed them to, when they encountered the sun – then they’d revert back to clear lenses.
These “wonder lenses” are called photochromic lenses, although they’re also referred to as “transitions” in honor of the company that developed them. In the years that followed this technology proved so useful that it became a common option amongst prescription eyewear purchasers, and continues today to be a top seller. But Transitions® continued with their research and development and made adjusts to photochromic lenses to address issues raised by consumers. One of these issues was the fact that because most modern automobile windshields are already treated to screen out UV rays, a driver’s photochromic glasses are only exposed to UV light from the side window glass and thus do not fully darken when one is driving.
The company’s answer, called DriveWear®, was recently released.
DriveWear® lenses react to both UV and visible light conditions, so they will darken in sunny conditions, even when you’re situated behind a UV-treated windshield. They feature unique photochromic dyes that react to light in both the visible and invisible ranges, and also incorporate polarized filters, which make them ideal for driving at any time of the day. In doing so, DriveWear® lenses combine two of the most advanced, specialized, and modern technologies in the industry: Transitions® Photochromic Technology and NuPolar® polarization. DriveWear® lenses adjust to light conditions in the following manner:
This breakthrough has been a boon to drivers, who no longer need to use a separate pair of sunglasses or clip-ons while on the road. There is one question about these lenses, however, that frequently crops up: Should DriveWear® lenses be used at night?
The answer is no. Since DriveWear® lenses will revert to a clear state in the absence of UV light, they offer no protection from road glare when it gets fully dark. Like all photochromics, they are purposefully designed so that they do not react to artificial light sources like headlights and streetlights…a necessary function, as you would not want the lenses to darken at night. Thus, as with any glasses you’d use to block the sun, DriveWear® lenses should not be worn while driving at night. To address nighttime glare, you should consider a pair of glasses with an anti-reflective coating, utilizing either clear or yellow lenses.
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Polarized lenses cut glare be it in the night or day in any lighting condition be it natural or artificial.
Whether night driving can be done with amber-green tint however less it might be as in case of drivewear would be another matter.
I am fitting these on my new frames to check out, but I would stick with coated clear lenses for night driving though
Yes strictly for night driving I totally agree I would recommend a clear or yellow lens with a anti reflective coating. The Anti Reflective Coating is a must for night driving.
I just bought some prescription glasses that have no glare and has the drivewear Technology built in them , my question is I am a semi driver from my understanding my prescription glasses will turn clear at night time due to not having no UV light Will the glasses be OK for night time driving since I also have the no glare in my glasses for night driving
No Drivewear is not safe to use for night driving. The lenses will never go fully clear. There will always be an amberish rust tint to the lens even when indoors or at night time.