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Who Should Wear Blue Light Glasses?

Güncelleme tarihi: Mar 28


Nowadays phone, television, computer and tablet use has reached to intense levels and this situation has caused blue light’s harm to come to the fore. Blue light emitted by screens of such devices contains serious risks for human health, especially for eyes. Some measures need to be taken to reduce or completely prevent these risks. Blue light glasses are among the most effective ones of these measures. Well, who should wear these glasses? What are the benefits of blue light glasses? You can find the answers to these questions and much more in the rest of our article.



What is Blue Light?

Blue light is the rays which have the shortest wavelength and the highest energy in the visible light spectrum. The wavelength is between 400nm and 500nm. Although it is called “blue light”, it does not appear blue with bare eyes. As you may guess, the biggest source of blue light is the sun.

Human eyes effectively block UV rays which are coming from the sun and prevent these rays from reaching retina. However, it does not have the ability to block blue light. Therefore, intense exposure to blue light significantly increases some risks such as digital eye fatigue and macular degeneration. Negative effects of blue light are a lot. Blue light glasses have been developed to prevent such types of risks.

Blue light does not just have harmful effects. Besides, exposure to blue light which is emitted by the sun is very beneficial for human health. Blue light regulates circadian rhythm, enhances mood, provides sleep patterns and helps memory. It should not be forgotten that blue light must be taken in the right amount and at the right time for such benefits.



What are the Effects of Blue Light on Eyes?

In the past, the only source of blue light was the sun but nowadays, blue light sources are everywhere due to technological products. We are constantly exposed to blue light due to phones, tablets, computers and similar technological devices.

Blue light is perceived by brain as if it is daytime. If you are exposed to blue light in evenings and nights, your sleep pattern will deteriorate over time. Besides that, it is an important risk factor for having problems such as eye fatigue, emotional disorders and sleep loss. It can be said that if measures are not taken against these risks with blue light glasses or other methods, the quality of life will decrease significantly and vision problems will be experienced.


What are the Benefits of Blue Light Glasses?

Spending a long time in front of screens such as phones, computers and tablets can cause some negativity, especially digital eye fatigue. Blue light is one of the most important causes of eye fatigue, but it should not be forgotten that it is not the only reason.

Human body adjusts its sleep pattern according to the amount of light it is exposed to. For example, blue light emitted by the sun until noon allows us to wake up. However, in the afternoon and towards the evening, amount of blue light emitted decreases, so our bodies are prepared for sleep. This preparation is made by a hormone which is called melatonin. However, spending time in front of a screen, especially in the evening, can prevent this hormone and thus a significant deterioration in sleep pattern may occur.

Blue light glasses are very useful and functional. Here, it prevents generally the mentioned risks and harmful effects. These glasses filter out these rays and prevent them from reaching eyes.



What Do Blue Light Glasses Do?

Blue light glasses block this light and prevent it from reaching eyes, as mentioned above and as it is understood from its name. But, how?

These glasses prevent the transmission of light of a certain wavelength or a specific segment. Thus, only rays with desired wavelength pass through the glasses. In other words, while these glasses only block blue light, they do not prevent other harmless rays from reaching eyes.

The main reasons for the development of these mentioned glasses are prevention of eye fatigue, preservation of circadian rhythm cycle and sleep patterns.



Should I Use Blue Light Glasses?

Studies reveal that, on average, adults spend 11 hours a day in front of a screen. This period is really long and constitutes serious risks in terms of eye health. Therefore, even if you have good eye health or do not have any complaints about your eyes, you should use these glasses for precautionary purposes. This is the advice of many experts.[*]


It is now known that digital screens constitute serious risks to people's eye health. Therefore, blue light glasses can be used while in front of a screen. However, if wearing glasses all day makes you uncomfortable, you can use them from time to time, especially in the afternoon and evening. Because blue light exposure for eyes during these hours affects release of melatonin, and this may cause different problems, especially sleep pattern related ones.



Where Can I Buy Blue Light Glasses?

Although blue light glasses can be purchased without a prescription, at this point, it is necessary to act according to your doctor's advice. After examination by your eye doctor, you can talk about this and act according to his/her advice. Following this advice, you can get mentioned glasses from reliable online platforms such as Muunel.com.



What Should I Pay Attention When Buying Blue Light Glasses?

Due to the increasing interest in blue light glasses, there has been a significant increase in the variety of glasses offered in this area. Therefore, it has great importance to be able to make the right choice among them. When buying glasses, the filtered wavelength must be at least 455 nanometers. In addition, it must have a certificate which states the filtered wavelength. You can get glasses that meet these conditions.



What Are the Different Ways to Prevent Blue Light?

Even when you are using blue light glasses for your eye health, you can tend to different solutions. The highlights of these solutions are as follows:

  • You can actively use the night mode on your phone. When you make it automatic, the screen brightness decreases towards evening hours, so you are less exposed to harmful light.

  • You can use mobile applications that can adjust screen brightness according to the amount of light around and the time.

  • You can apply blue light filtered screensavers to your device’s screen such as phones, tablets and computers. This way, you are exposed to a much lower amount of blue light.

  • Photochromic lenses are another option at this point. These lenses protect your eyes by blocking both UV rays and blue light.



Are There Different Causes of Digital Eye Fatigue?

Blue light glasses effectively protect your eyes from this harmful light. Therefore, it eliminates one of the most important causes of digital eye fatigue. However, it should not be forgotten that different factors such as dry eye syndrome, eye rupturing and focusing problems can also cause eye fatigue.

While looking at digital screens, we blink our eyes all the time and as a result, situations such as blurred vision, dry eyes and fatigue may occur. If you have to stare at digital screens for a long time, follow the 20-20-20 rule to protect your eyes.

This rule is about looking at an object 20 meters away for 20 seconds, once for every 20 minutes.

Nowadays, we are exposed to digital screens whether we want it or not. This situation makes it necessary for us to take some precautions. Blue light glasses are one of them, and serious usage should be considered.

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