As regular readers will know, I’ve previously written about something called blue light. Blue light is the term used to describe the light that comes from computer screens, tablets and cell phones etc. Well, a news story broke in the UK yesterday, which has brought blue light – into the limelight.

What is blue light?

In short, blue light is apparently the same kind of light that we get naturally, in regular outdoor daylight. It’s said that because people often read from their tablet or cell phone shortly before going to bed, or when in bed, that their brains are fooled into thinking it’s daytime. So, eyewear has been created that simply blocks this blue light from reaching the eye. The idea is that this will help people, who use their electronic devices before bed, to sleep better.

Blue light ad gets the red light!

Well, in the UK this week, one of their biggest optician chains, Boots, has had a national newspaper ad campaign banned by the ASA (Advertising Standards Authority). The ASA is a powerful UK organization, which controls advertising. They try to ensure that advertising meets the UK guidelines. They then act when they believe ads are misleading, inappropriate etc.

The BBC reports that in the advertisement, a “misleading” claim was made. Namely, that blue light causes actual eye damage. From what I could see, there was no issue with claims that blue light blocking eyewear can help electronic device users to sleep better. 

Lenses that offer blue light blocking, including sunglasses and prescription glasses, are now available in The U.S. It will be interesting to see if claims made about what these lenses can do, are questioned here as well.

And finally

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