Known as “Blue Light” on the visible light spectrum, HEV Light has a wavelength between 380nm and 500nm. It is the one of the highest-energy wavelengths that the human eye can detect, therefore having a unique composition of dangers and benefits to your eyes and health.
HEV Light is anything but a rare occurrence – we are surrounded by it constantly. In addition to coming from the sun, HEV Light also enters your eyes from computer monitors, TVs, smart phones, tablets and other electronic devices.
HEV Light’s Impact On Your Eyes
Overexposure to HEV Light can cause or accelerate certain eye conditions. With our constant, everyday use of electronic devices in modern times, the impact of HEV Light on our eyes is being seen in increasing numbers and severity; the most common condition being Digital Eye Strain.
Digital Eye Strain
Symptoms of Digital Eye Strain include:
- Blurred vision
- Difficulty focusing
- Eye fatigue/irritation
- Neck and lower back pain
Overexposure to HEV Light can also accelerate the effects of a pre-existing macular degeneration condition. This is an eye condition which deteriorates the retina in the same way HEV Light can, potentially leading to blindness.
It may come as a surprise that something that can cause damage to your eyes can also be good for you. In the right amounts, HEV Light is essential to good health – it can boost alertness, memory, other important cognitive abilities and can even put you in a better mood. It would not be in your best interest to block all exposure to HEV Light!
Living With HEV Light
The requirement to use electronic devices has become an fundamental part of our everyday, modern lives. This is not likely to change, and exposure to the sun is both inevitable and necessary for life. So, how can we live with HEV Light without experiencing any of its negative effects? Below are some simple and cost effective recommendations:
- Use HEV Light Filters on your devices. These thin layers of plastic or tempered glass can be put over the screens to block a significant amount of HEV Light without compromising the visibility of the display. They can be found at any store that also sells the devices.
- Use eyewear made for blocking HEV Light. There are eyeglasses and contact lenses on the market which are coated in anti-reflective materials to block HEV Light. Some of this eyewear is specifically made for looking at the computer monitors, while others are also made to serve all purposes.
Use the “20/20/20 rule”. Every 20 minutes, look at something at least 20 feet away, for at least 20 seconds. This ensures that your eyes are given enough of a rest from looking at HEV Light sources, subsequently mitigating long-term damage to your eyes.