Prevent Eyes From HEV Rays

Biological Effects of High-Energy Visible Light

Visible light includes an extensive range of energy and wavelengths. HEV light (High energy visible light), also called blue light, is the part of the visible light spectrum that has the highest energy. Due to its high energy, the blue light or HEV light has more potential to cause harm to your eyes as compared to other visible light.

HEV Light Eyes


Most of the strong UV rays coming from the Sun are harmful, but the upper layer of the atmosphere efficiently absorbs them. High-energy visible light (HEV) is usually emitted from the Sun, but it is also emitted through your computer screen, phone, or tablet. Blue light has the highest energy and shortest wavelength and is similar to UV rays. This high-energy visible light has both advantages and disadvantages.

In this article, we will cover the biological effects of high-energy visible light. Several types of research were carried out to identify how harmful HEV light is to the eyes and how it negatively impacts our well being.

Harmful Effects of High-Energy Visible Light 

Several types of research are still going to identify the adverse effects of HEV light on human health. Still, facts show that exposure to blue or HEV light can lead to numerous health-related issues in the human body. Here are some of them:

Contributes to Digital Eye Strain

Due to the short wavelength of HEV light, it is easily scattered and less focused. Therefore, when you are continuously looking at your phone or computer screen, the blue light reduces contrast, and your eyes will buckle down. After some time, you will feel a strain in your eyes, further leading to headaches or shoulder and neck pain.

Digital Strain

Several kinds of research have proven that glasses that block HEV or blue light with wavelengths less than 450 nm increases the contrast significantly. Therefore, blue light protection glasses with tinted lenses do increase your comfort when you are using a digital device for an extended period of time. 

Disrupts Your Sleep Cycle

The natural form of HEV light or blue light controls your psychological functions. It enhances alertness, promotes a better mood, and improves your cognitive functions. These are the good effects of natural HEV or natural blue light.

However, the artificial sources of HEV light can cause some harm. It affects the generation of the melatonin hormone, which disrupts your circadian rhythm. This is the reason why you should not use your phone or digital devices late at night.

HEV light has its own pros and cons. You must be aware of its adverse effects and try avoiding such things that disrupt your sleep. If you still want to use your phone at night, several protection glasses are available in the market that can help you eliminate the harmful effects of blue light.

Risk of Macular Degeneration

The most harmful effect of blue light is the greater risk of macular degeneration. This is because the blue or HEV light penetrates your eyes deeply and reaches the macula, which regulates your central vision. In addition, it can also damage the small light-sensing cells present in your retina. This causes changes that are similar to macular degeneration, which can further lead to permanent vision loss.

Several eye care providers are concerned that high exposure of blue light or HEV light from smartphones, computer screens, and other electronic devices may increase the risk of macular generation in an individual’s life. However, more research is required to identify how much man-made and natural blue light is appropriate for the retina.

In order to prevent eye damage, it is better to wear blue light protection glasses. These glasses eliminate the harsh effects of blue light and protect your eyes from severe damage.

How to Protect Yourself from Blue Light Damage?

If you are using your phone continuously, especially if you use it mainly for emailing, texting, or online browsing, the best way to reduce the high exposure of blue light is to use a blue light filter or blue light protection glasses. These protection glasses are available for computer screens, tablets, and smartphones and prevent a significant amount of HEV light or blue light coming from these electronic devices from reaching your eyes without affecting the visibility of the digital screen.

How to Reverse Blue Light Damage | BLUblox blog

Some of the protection glasses are made using thin tempered glasses, which also protect your smartphone’s screen from scratches and any other damage. As you know, protection glasses also can be helpful to reduce the high exposure from blue light from computer screens, smartphones, and other electronic devices.

Also, several prescription glasses lens manufactures have introduced unique glare-reducing anti-reflective coatings, which prevent the blue light from entering the eye from both electronic devices and natural sunlight. So, you must ask your optician or eye doctor which type of lens and vision correction features are perfect for fulfilling your needs. Then, choose the best one for viewing your computer screen and other electronic devices and protect your eyes from the harmful effects of blue light or HEV light.


Since high-energy visible light is so harmful, there are still some ways to help you protect your body. High exposure to blue or HEV light can lead to numerous health issues, whether it is coming from the Sun or from any electronic device. To effectively protect yourself from the harsh effects of HEV light, blue light protection glasses can be your best choice. For the best quality, highly effective and affordable protection glasses, you can visit

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