I bought some Zenni Optical glasses recently. Paid for the blue light filter ("Blokz"), and the yellow and amber clip-ons.
Night Driving Clip-On (Yellow Tint) - $5.95. Sunglasses Clip-On - Amber - $3.95
They also came with a "Blue Light Laser Pen".
The lenses do block the narrow wavelength of the "blue light laser".
High-energy photons - violet -> Blue - are a full 100nm: https://en.wikipedia.org/wiki/Visible_spectrum#Spectral_colo...
It's not enough to block out a few random wavelengths of blue, you need to reduce them all.
One of you told about using amber glasses to protect themselves from LED streetlights. I found that amber glasses blocked out too much light. Some yellow glasses are pretty good, some yellow glasses are worthless. These are my new favorite blue-blockers: https://www.harborfreight.com/safety/vision-protection/safet...
They work great with contacts. I can also put my glasses over them. They're not as good as the Cocoons, that my local glasses store stopped selling because people were wearing them at night, but they can't be beat for the price.
My comment from 1.5 years ago: https://news.ycombinator.com/item?id=29962021 "Most of the glasses sold for blue-light blocking don't block nearly enough of the blue light to make a meaningful difference. I think the main thing is to reduce the amount of blue light that you're exposed to at night. [...]"
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