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If you are behind a glass windshield it should not matter all that match (glass is almost black for UV [and infrared]). At least I have never had issues with si
by xxs 9y ago
If you are behind a glass windshield it should not matter all that match (glass is almost black for UV [and infrared]).
At least I have never had issues with similar glasses.
The contact lenses contain a photochromic additive that adapts the amount of visible light filtered to the eye based on the amount of UV light to which they are exposed
- Jaruzel 9y ago> glass is almost black for UV [and infrared] If this is true, then why does my right arm always get more tanned than my left when I drive in the summer (UK, right-hand drive) ?
- koolba 9y agoDifferent type of glass[1]. The windshield had a layer of plastic in between that absorbs the UV. The side windows are regular glass. [1]: http://www.tampabay.com/news/health/do-car-windows-protect-you-from-the-sun/2139733 http://www.tampabay.com/news/health/do-car-windows-protect-y...
- Retric 9y agoEven side windows block ~65% of UV light, it's really more about exposure though as people may spend a lot more time driving than walking outside.
- geoelectric 9y agoCan't speak for the contacts but Transitions Xtractive also react to visible light, albeit not as strongly as for UV. Mine tint noticeably behind a windshield or inside a motorcycle helmet (and, unfortunately, large-windowed conference rooms). Never had issues in tunnels or buildings such that I needed to remove them though.