The Case for and Against Blue Light Blocking Glasses (2021)

| 28.06.2020

Before the invention of modern-day-technology there was no concept of starring at things that emit light, that too for long hours and by long hours, I mean, around one-third of the day of an average person is spent looking at digital screens, hard to believe, right? It shocked me initially, but this is where we stand so far.

Blue Light has created quite a hype in the recent past, and there’s a lot written on the matter already as well. Having a shorter wavelength can travel deep into our eyes and leave a more substantial effect than all the other colors present in the light. That’s where blue light blocking glasses, also known as computer glasses, come into play.

Computer glasses provide an anti-blue-light coating on the glass, which can allegedly block around 30% of the harmful waves coming your way while looking at your computer screen. However, one can ask, how can a non-specialist check if this claim has any truth to it or not?

Let’s look at some compelling methods to check if there’s any reality to the matter.



Contact the Company:

If you need to check your computer glasses, the most prominent and precise way of doing so is to contact the company from which you bought the pair. It’s highly advised not to consider their verbal guarantee instead of asking for a spectrum report. The report will chop down everything for you, and you will know exactly how much blue light your glasses are filtering.

Upon receiving the spectrum report, inspect it thoroughly, and if your glasses are filtering at least 30% blue light, then it is worth your money; however, keep in mind that blue light it is meant the whole blue range present in the light and not just the violet color.

Contact the Company
bluish color

Test at Home:

If you don’t care about precision and want to know a general method to check if your glasses block any blue light, then we have got some ways for you as well. For starters, you need to take off your glasses and place them in front of any light; if they reflect a bluish color, then it can be concluded that they’re blocking some ratio of blue light; however, if the color happens to be violet or purple, then it’s merely a no-no.

The Magic Squares:

If you happen to see both the squares in the picture as of the color black (while you’re wearing the magical glasses), congratulations, your blue light blocking glasses work great. However, this method is also not precise and can’t be relied upon against its report. If you’re able to get a spectrum report from your company, that’s still the best way to go, hands down.

Magic Squares


You will find many ways to check if your glasses block enough blue light or not online, but all of them are limited towards precision; if you want to be sure and don’t want to go wrong in your investment, then I would suggest relying on the company’s report should be your only way to go.

No matter how much blue light your computer glasses can filter, it is still advised to take a different approach while using tech gadgets; taking a break now and then doesn’t hurt; also, if you have to sit in front of a screen for long hours, try looking away from it after every 20 to 25 minutes, try focusing your eyes on something that’s at least 20 meters away from you for at least 20 seconds or more.

Your priority should always be protecting your eyes, and a pair of glasses cannot ensure you anything if you don’t take precautionary measures and don’t care about your vision.