That’s why a blue-light-sensing protein called melanopsin exists in human eyes. On an evolutionary scale, not long ago humans lived outdoors and were ruled by the sunrise and sunset. As such, it’s fair to ask, how bad can blue light truly be? However, the biggest source of blue light is the sun, which is known to be crucial in many ways. Various technologies that light up the displays of the electronic devices use wavelengths in this range. It’s crucial to notice blue light rays have the smallest wavelengths (380 nm to 500 nm) of all other colors in the visible spectrum because they have the highest energy photons. Now, back to the visible spectrum and the colors of the rainbow: Red, Orange, Yellow, Green, Blue, and Violet. Fast forward to 2018 when the Apple A12 Bionic chip was released containing 6.9 billion transistors manufactured using a 7 nm process.

What else is measured in nanometers? Transistors! Back in 19, the smallest transistors were 600 nm and 350 nm, respectively. Somewhere between the two extremes exists the very tiny fraction human eyes can detect, which is known as the visible spectrum, with wavelengths in the range of 400 nm to 700 nm. What Is Blue Light and Is It Really Evil?Ĭonsider light as electromagnetic radiation with an enormous range in terms of frequency, energy, and wavelengths – from gamma (as tiny as 1 trillionth of a meter) to sub radio (as big as the universe since there’s no theoretical upper limit). That’s why, below, we’ve endeavored to outline everything you need to know regarding blue light and blue light filters. While eye fatigue and sleep trouble may be the most commonly experienced problems, many other health issues are linking to blue light exposure. That’s high energy visual (HEV) light ready to disrupt everyone’s sleep. You’ve seen that when people use their electronic devices in a dark environment, they are covered in a blue glow. What you may not be aware of though, is the impact it has on your vision, your sleep, and your health, as well as how you can immediately protect yourself by using a blue light filter. What is blue light? Have you noticed that your eyes get tired when you spend too much time in front of the computer? Sure you do, since you are the one who has to deal with the headaches, the super dry eyes, and even blurred vision at times.

Or discover ViewSonic’s monitors engineered with ultimate eye comfort here. Read our quick guide on how blue light affects your eyes and how to protect your vision. But with a couple of simple precautions, there’s no reason to fear your screen. Unfortunately, that blue light can cause eye strain, interrupt sleep, and more. That light affects eye health and sleep, so it’s a good idea to reduce excessive blue light with options like a blue light filter for your PC. Modern screens produce a lot of blue light.

Laptop screen filter eye