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    How Can Sunglasses Block Blue Light?
    Blue Light, Eye Care, Sunglasses

    How Can Sunglasses Block Blue Light?

    How Can Sunglasses Block Blue Light

    Updated 20 July 2024 • Chelsea from Kraywoods



    Have you ever realized the dangerous effects of sunlight and artificial lights coming from digital devices? From TV screens, cellphones to all types of digital gadgets around us, visible artificial lights are harmful. Even so, just by being outdoor in the sunlight or sitting in front of the computer, can expose our eyes to visible light rays that have a range of side-effects on the eyes.

    Just how damaging can the sunlight’s invisible UV rays have on the eyes? We’ll deal with that later. But, did you know that they have serious damage to the skin too? Not just invisible UV rays, we’re talking about the visible light rays released by the sun. They include a range of different coloured light rays such as blue light.

    Here’s the good news thought, you can protect yourself with a pair of stylish sunglasses that blocks blue light along with all visible light rays. Let’s explore everything you need to know about blue light and how can sunglasses block blue light.

    1. What is Blue Light Glare?
    2. What are Blue Light Glasses?
    3. What You Should Know about Blue Light
    4. Is Blue Light from Digital Devices Harmful to the Eyes?
    5. Options for Blue Light Protection.
    6. How Can Sunglasses Protect Your Eyes from Blue Light?
    7. How to Use Sunglasses as Blue Light Blocking Glasses?

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    1. What is Blue Light Glare?

    Sunlight is made of red, green, orange, yellow and blue light rays along with many different shades. It depends on the wavelength of the individual beams and energy. Some people know wavelength as electromagnetic radiation. In combination, this range of coloured light rays generates what we call "white light" or, in other words, sunlight.

    However, there is a reverse connection between the wavelength of light rays and the extent of energy they hold without any complicated physics. Light beams that have relatively long wavelengths have less energy. On the contrary, short wavelengths have more power. Rays on the red end of the visible light range have lengthier wavelengths and less energy.

    As for blue light, it has very short, high-energy waves. They are slightly longer and less powerful than ultraviolet waves, which are dangerous too. Health experts warn against the high energy blue light waves. Blue light is everywhere around you. The sun emits blue light so do digital devices, hence the need for blue light glasses. Human beings are exposed to more blue light than ever because of the widespread of the LED technology.

    Watch Below: Blue Light Explained

    2. What are Blue Light Glasses?

    Now that you have an idea of what blue light is and where it comes from, you can start realizing the importance of protecting your eyes against it. How can you do so? With glasses of course! Polarized sunglasses can help you block out the UV rays, but there are also blue light glasses that can be prescribed and made for you.

    So, to come to the understanding of the term, blue light glasses are equipped with blue light blocking lenses that contain a special filter. They shield your eyes from the harmful blue light emitted by computer screens and other digital devices. The good news is blue light glasses are available with or without prescription.

    3. What You Should Know about Blue Light

    People who are engaging with the outdoors on a daily basis have to deal with the long exposure of the sun in their eyes. The painful glares might eventually lead to visibility problems. Since blue light is a form of ultra violet light, prolonged exposure to it has severe consequences. Here’s what you should know about blue light:

    1. The primary source of blue light is sunlight. During daytime, the outdoors is where most of us get highly exposed. But there are also other human-made and indoor sources of blue light, like - flat-screen televisions, fluorescent bulbs and LED lighting.
    2. Our eyes are not good at blocking blue lights, the blue light glasses are good at that. Wearing blue light glasses all day is not harmful to the eyes and can be done.
    3. Laboratory studies have shown that too much contact with blue light may damage light-sensitive cells in the retina of our eyes.
    4. High energy blue light sprinkles easily than any other visible light because of the short-wavelength and it is not focused easily.
    5. So, are all blue lights harmful to the eyes? Research says NO and it is also well documented! Some blue light exposure is vital for our health. The study also found that high-energy visible light improves attention, helps memory and mental function, and uplifts your mood. Additionally, blue light is also essential to regulate the circadian rhythm — our body's natural restiveness and sleep cycle.  

    4. How Can Sunglasses Protect Your Eyes From Blue Light?

    Most of the sunglasses are equipped with UV400 lenses that block 100% of the sun's UV rays and therefore, lessen glare. When it comes to reducing blue lights, some sunglasses offer superior visual clarity and comfort while using any digital devices. But the real key is related to the lens tint.

    When shopping for sunglasses just like the blue light glasses example, you have to pay a closer look to the colour of the lens. Your top priority should be dark amber, copper yellow, orange or brown tinted lenses. These lens colours work perfectly to filter blue light and intensify contrast, making them great for outdoor and indoor activities.

    close up of a polarized sunglasses lens

    Moreover, we advise you to ask your eye care provider for recommendations and lens coating options to make sure your sunglasses block both blue light and ultraviolet rays. But, do polarized sunglasses block blue light from computers? Avoid them. The polarization filter can distort your vision when staring at laptops or other digital and LED screens. That's why it's important to know the difference between polarized and non-polarized sunglasses

    5. Is Blue Light From Digital Devices Harmful to the Eyes?

    Do you know that sitting in front of the computer or staring at your smartphone for long hours is not suitable for your eyes? This can lead to something called digital eye strain. Do you know the reasons behind it? Research shows that people tend to blink less than normal when exposed to blue light from devices. Therefore, fewer blinks lead to less moisture to the eyes.

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    In addition, excessive use of a smartphone or tablet can lead to headaches, eye strain, dry eyes along with shoulder and neck pain. As mentioned earlier, too much blue light exposure can even interrupt your sleeping habit by overpowering melatonin. The former is a chemical which controls your body’s night and day cycles along with sleep and wakefulness. So, how badly do you need your blue light glasses now?

    Man sitting at a computer, rubbing his eyes showing symptoms of eyestrain wearing a purple shirt with a black watch

    6. Options for Blue Light Protection

    Every problem has its solutions, as dangerous as blue light may sound, there are numerous tricks you can do at home to protect yourself before shopping for blue light glasses. Starting with the 20-20-20 strategy: Whenever you are using a gadget that produces blue light, stop every 20 minutes and focus on objects that are 20 feet away for 20 seconds.

    Additionally, you've probably heard that blue light glasses protect your eyes from digital strain and eye fatigue. Of course, blue light glasses are a great option to protect your eyes when you are indoors looking at your digital devices or working on your computer.

    However, the best option for you would be sunglasses, they are perfect substitute to blue light glasses. They can be very useful to block blue light in certain settings. Are you ready to explore how wooden sunglasses block light? Try a pair of our sunglasses like the Oxford sunglasses and enjoy your day out away from harmful rays.

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    7. How to Use Sunglasses as Blue Light Blocking Glasses?

    Now that we’ve established the idea that sunglasses can help protect your eyes from harmful blue light, you may wonder how effective these might be and how much protection they can provide compared to simple computer glasses or blue light glasses. The answer is simple: Sunglasses, just like blue light glasses, can be very effective in blocking blue light. However, this depends on the tints of your sunglasses’ lenses. It may not be the most practical option, especially in an indoor setting.

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    On the contrary, photochromic lenses will help you adjust the outdoor and indoor lights, protect you from the sun's harmful UV rays and provide protection from blue light from all digital devices or screens. If you are outside, sitting on your balcony or in a park and working on your laptop or staring at your smartphone, your sunglasses can be useful. They’ll protect your eyes from the sun's harmful rays in addition to the blue light rays emanating from your laptop screen or phone. If you happen to be indoors and using digital screens, then computer glasses or women and men's blue light glasses will give you better protection.

    Would you like to have the best of both worlds? You’ll be able to have sunglasses outdoors and a protection from blue light indoors with photochromic! You can enjoy spending time outdoors and indoors while having your eyes protected at all times without having to remove or switch your glasses! You'll have the ultimate protection with your sunglasses outdoors while maintaining your blue light glasses indoors. Our lenses guide can help you better understand blue light lenses and much more.


    We did a pretty good job in covering the important parts regarding blue light glasses. Now that you have a clearer idea, it is best to keep our advice in mind and start applying them to your every day life! No person wants their sleeping cycle to be interrupted. Therefore, to prevent any eye strain coming from any digital device, take a few breaks every now and then or reduce your working hours if its possible. Try on your blue light glasses now, who would say no to a shopping spree?

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