What is Blue Light?
Emitted from the sun, blue light is naturally occurring in the world around us. On the spectrum of visible light (light that humans can see), blue light has the highest energy and the shortest wavelength.
It is also sometimes known as blue-violet or violet light, which is where ultraviolet (UV) light rays that are just beyond our perception get their name. Much like ultraviolet light, blue light has both dangers and benefits to our health, particularly to our eyes.
What are the Potential Dangers of Blue Light?
Research is still being done to determine the long-term effects of blue light or high-energy visible (HEV) light emission, however it is known is that blue light is a cause of computer vision syndrome (CVS) and sleep disruptions.
The Effects of Digital Eye Strain
Symptoms of digital eye strain include:
- Blurred or double vision
- Sore eyes
- Dry or watery eyes
- Sensitivity to light
- Neck, shoulder or back pain
In addition to these symptoms, emerging research shows that blue light from digital devices causes sleep disturbances by interfering with the REM cycle of sleep.
As people move from their computer to their tablet to their phone, more and more of these symptoms are being seen, and in younger and younger people. Computer glasses offer a solution to reduce the strain on your eyes and your exposure to blue light radiation.
How Computer Glasses Work
Computer glasses reduce eye strain by adjusting the focus slightly so that your eyes feel like they are focusing on something further away. They also have a tint to remove the glare and block blue light from entering into your eyes.
Children and Computer Glasses
Children are using digital devices more than ever and this trend will only continue as smartphones take over and tablet and computer-based learning increases. Their use extends well beyond the school day, as they use computers for homework and gaming and smartphones to text with their friends.
Computer glasses should be used for children proactively before eye strain begins to keep their eyes healthy longer and prevent nearsightedness.