Blue Light Breakdown

What Is It, and Why Should We Block It?

Maybe you’ve heard about the mysterious blue light your electronics are emitting. And maybe you’ve toyed with trying to protect yourself from said emissions. But what, exactly is blue light, and why would we need to block it? Let’s break down the myths and mysteries of blue light exposure.

Blue light is part of the natural electromagnetic energy spectrum, of course.

Clear as mud, right?

Simply put, electromagnetic energy is energy that travels in waves, and those waves travel in differing lengths. Longer waves transmit less energy; shorter waves transmit more energy. Blue light has a very short wave and is therefore higher energy. The blue light wave is only slightly longer than the UV light wave, and we know how damaging UV light can be.

The human eye can only see a tiny portion of electromagnetic energy, which our brains interpret as visible light. Artificial blue light from electronics is a digital age concern.

According to the National Institute of Health, the main danger of exposure to blue light is the disruption in the circadian rhythm. Over exposure can put people at risk for certain hormonal and metabolic changes like elevated blood sugar, for example, plus fatigue and compromised alertness. Such complaints as tired eyes, dry eyes, and sore or irritated eyes are almost certainly a result of exposure to blue light from electronics.

Now, here’s the kicker: While artificial blue light is a real concern, the sun is the main source of blue light, and it emits much larger quantities than any one electronic device. It certainly makes sense to limit or block exposure to this high energy, eye-irritating sleep thief.

With that said, here’s some good news: A blue light filter on your glasses is great protection from electronic blue light. Plus, polarized sunglass lenses block blue light, offer UV protection, and reduce glare, resulting in better protected eyes and clearer vision. That’s what we call a win/win.

At Rio Ray, we offer polarized lenses in regular and prescription sunglasses in so many styles you’ll have trouble making a decision. With the blue light mystery solved, the only thing left to do is shop! We recommend you start here: riorayoptics.com