Blue Light : How We’re Harming Our Eyes Without Realizing It

Blue Light

In this blog, we will discuss the harmful effects of blue light on human eyes and how to avoid it. Blue light is not actually a single color but the combination of the colors violet and green, which are the two extremes of the visible light spectrum. Blue light is a type of visible light that is perceived by the eyes. Blue light is beneficial to humans in many ways. It is the main source of energy for photosynthesis. It is a part of the natural light spectrum and is necessary for the healthy functioning of your eyes and body. It is also used in the production of vitamin D. But, there are some negative effects of blue light on human eyes. When you stare at blue light for a long time, the excessive amount of it can cause some serious damage to your eyes, which includes weakening of the eyesight, eyesight problems and even the risk of macular degeneration.

“This blog looks at the effects of this blue light on our eyes and ways to reduce them.”

What is Blue Light?

Blue light is actually a secondary wavelength generated by our light bulbs. It is usually produced by incandescent light bulbs and fluorescents. The light produced by incandescent bulbs is generally a mix of red, orange, yellow and white light. These light bulbs have a coating of a chemical that produces blue light. Fluorescent light bulbs have a coating that blocks most blue light, but fluorescent light bulbs do produce some blue light. Blue light is actually not only blue, but also violet and green light as well. The problem with blue light is that it can lead to glare, eye strain and even headaches. In fact, the reason why people experience headaches when they watch TV, is because of the blue light that the TV produces. If you want to reduce blue light, you should use yellow light bulbs, tinted glasses or yellow-tinted solar film. More information Tap on: Blue light impact on human eyes.

What are the health hazards affecting our eyes from blue light?

Blue light exposure is one of the biggest health hazards in our society. It exists in every single source of light including sunlight, TVs, smartphones, tablets, computer screens etc. This exposure has been linked to macular degeneration, glaucoma, cataracts and blindness. Blue light is strong enough to penetrate the center of the human eye and destroy the retina’s ability to absorb yellow and red light, which are necessary for sight. Eyes are more at risk from this blue light exposure in the age group of 30-60. Also blue light exposure has been linked to obesity. A recent study found that prolonged exposure to blue light in the evening can make you gain weight. An additional problem is that blue light exposure makes you feel hungrier. More exposure to blue light can make you eat more or crave more sugary foods. Blue light exposure is also linked to sleeping problems and even depression.

The importance of blue light blocking glasses

Sleep deprivation is a very serious problem. In fact, lack of sleep is one of the leading causes of death in the USA. People who don’t get enough sleep are at a higher risk of suffering from several debilitating diseases and disorders, such as heart disease, diabetes, and obesity. If you want to stay healthy and live longer, you need to make sure that you get at least 7-8 hours of quality sleep every night. However, according to the CDC, approximately 35% of adults in the United States are sleeping less than 7 hours per night. If you are not sleeping enough, you should definitely consider using blue light blocking glasses. These glasses work by blocking out blue light from the screen of your phone, computer, and TV. Exposure to blue light from electronic devices is one of the biggest reasons why people are not able to get enough sleep. By blocking out this blue light, wearing blue light blocking glasses will allow your body to relax and enter the deep sleep phase. For more information tap on:  blue light glasses benefits.

The different types of blue light blocking glasses

Blocking Blue Light with Glasses Three different types of blue light blocking glasses are listed below:

1. Blue blocking glasses (Block blue light of wavelength between 380 – 450 nm) 

Some blue blocking glasses contain effective blue light (380 – 450 nm) and UV blocking materials, blocking out 96% of blue light and 80% of UV rays. Some blue blocking sunglasses come with an additional tint, blocking more blue light and UV rays.

 2. Glare reducing sunglasses (Reduce glare from computer screens, mobile phones and other light sources) 

These are designed to reduce glare from computer screens, mobile phones and other light sources, and protect your eyes from the associated damaging rays. 

3. Sun blocking glasses (Block blue light of wavelength between 400 – 500 nm, UV blocking) 

These glasses contain UV blocking and blue blocking lenses, blocking 98% of blue light, less than 0.5% blue light will pass through the lens and enter your eyes. Sun blocking glasses are basically sunglasses that have been modified to block blue light.

The different health benefits of blue light blocking glasses

Blue light blocking glasses is a new trend that is getting popular as a great health and beauty hack. These glasses are specially designed to block the harmful blue light that is emitted by the gadgets. This helps in eliminating the effects of short-term eye strain, dryness and fatigue. Most health experts suggest the use of blue light blocking glasses after working on a laptop or computer for a long time. These blue light blocking glasses are specially designed with light blue or green lenses which are not harmful to eyesight. 


Apart from the effect of blue light on eyes, it is important to understand the importance of blue light on the body. Exposure to blue light from the sun is essential for the body to produce vitamin D. Vitamin D is essential for the absorption of calcium and helps maintain bone health, as well as many other functions in the body.  

Hope you enjoyed reading! 


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