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submitted 3 months ago by yokonzo@lemmy.world to c/asklemmy@lemmy.ml
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[-] Shdwdrgn@mander.xyz 51 points 3 months ago* (last edited 3 months ago)

Just an FYI, I had that happen to my driving glasses a couple years back. My optometrist said that's because you cannot leave glasses in a hot car as the heat destroys the coating... OK thanks for telling me AFTER the fact, where do you THINK I am keeping a pair of glasses that you designed specifically for my driving vision? And by the way, I've been wearing glasses for over 35 years and always had the anti-glare coating for night driving, what did you change that is suddenly making them self-destruct when they are stored where I need them???

Yeah they had no answers for me. But OP, if you left your glasses in your car, that's probably what happened to the coating.

[-] pearsaltchocolatebar@discuss.online 12 points 3 months ago

Just an FYI, temperatures in a car in direct sunlight can exceed 165F. Very quickly.

I know this because I left a glass thermometer under my seat for an hour one summer. When I came back to grab it, the glass has burst (max on the scale was 165F).

I have no idea about lens coating changes over time and their heat tolerance, but the insides of cars can be fucking awful.

[-] EddoWagt@feddit.nl 9 points 3 months ago

That's 74 degrees Celsius for the rest of the world

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this post was submitted on 11 Aug 2024
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