When compared to other colors, blue light can be primarily described as the shortest and yet, the highest energy wavelength in the light spectrum that affects clarity reduces the visual contrast as well as sharpness. Further, it causes mental and physical fatigue, headaches and eye strain.
There are two types of blue lights: one is natural, and the other is artificial. The natural blue light is everywhere and soothes the eyes and body. However, artificial lights emit from a variety of electronic devices that include TV, tablet, computer and smartphone.
However, human eyes have yet not evolved enough to filter the artificial blue light. Due to this, prolonged exposure to this kind of light can lead to various health issues such as macular cellular damage that may, in turn, lead to the loss of vision.
Research on Blue Light Exposure
According to experts, as blue light waves are highest and shortest energy wavelengths (HEV), they flicker easily when compared to weaker and longer light wavelengths. In turn, these flickering results in glare that affects not only clarity and sharpness, but also reduce visual contrast.
According to an American Survey of Children that was published July 2014 by U.S. Center for Disease Control and Prevention, 75% children from 12 to 17 age group watch TV for 2 hours at the least, and use the computer for 3 hours a day. Further, 15% of teens watch TV for 4 hours or more, as well as use the computer for the same duration in a day. As a result, they are highly exposed to blue light every day and it should be a matter of concern for parents and other adults.
Although the digital screen technology has advanced considerably during the last few years, the issue related to blue light has not been resolved. Most of the electronic devices currently available, use the latest technology such as LED backlight technology to enhance the quality of image clarity and screen brightness. However, this technology emits extra strong blue light waves and with the wide-spread use of these devices, more and more people are being exposed for a longer time.
Some measures you can take to reduce exposure to blue light are as follows-
- When watching a digital screen, blink eyes more often.
- Take frequent breaks when watching a movie on a TV screen or working on a computer
- Clean the TV or computer screen regularly as a dust-free or a smudge-free screen reduces the glare and blue light emission.
- Change the background of the digital screen from white to warmer colours to reduce eye strain.
As the use of digital screens continues to increase with the increasing popularity of various electronic devices such as LED TV’s and smartphones, blue light emission is the predicament which remains unsolved. However, by deploying some easy workarounds discussed above, you’ll avert any eye strain related complications in the future.a