What’s the mechanic in transparant blue light glasses and how would they help prevent eye fatigue and headaches?
In: Physics
Anti-reflective coatings, or AR, are a film put on a lense to reduce reflection so that the glasses wearer can see better. There are hundreds of varieties for multiple purposes made by many companies.
The blue coating you are referring to is specifically designed to block a specific blue light from your electric device’s screens, but is not that great for keeping refraction from blinding you while you’re driving. In fact, I can’t use my blue light glasses when driving at night, I have to use another pair.
(I work at an optical lab, so I own a lot of glasses.)
There’s multiple ways an AR controls reflection too. The wiki page below can explain it better than I can.
[Anti-Reflective Coatings Wikipedia](https://en.m.wikipedia.org/wiki/Anti-reflective_coating)
Now, as far as how blue light gives you headaches and migraines, every color on the spectrum has a specific wavelength. Apparently the short wavelength of blue gives us these issues, but some is going to have to explain that one to me like I’m five. I read the WebMD article on it and it’s going over my head.
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