Are Blue Light Glasses effective?

The devices we use these days, like computer monitors, smartphones, flat-screen TVs, and tablets, often emit blue light, also known as Blu-ray light. The distinctive feature of this light is that it has a shorter wavelength. The point is that the more we use gadgets, the more exposed to blue light we are.

Exposure to blue light is increasing:

According to this 2018 report, consistent high exposure to blue light can damage your eyes. With our device usage, especially smartphone usage, increasing day by day, we are at risk of damaging our eyes.

However, there is a simple solution available. Bluelight glasses claim to help you shield your eyes from this light emitted by various gadgets.

Manufacturers and companies believe that by using these classes and altering your lifestyle to a certain extent, you can keep away the symptoms of blue light like dry eye and eye fatigue. There is, however, some confusion regarding whether these blue light glasses and lenses can help you protect your eyes from blue light or not. Today in this post, we will help you understand if such blue glasses work and what else you can do to prevent the side effects of blue light.

What is the significance of blue light?

As highlighted above, blue light is shortwave length light between 415 to 455 nm. The wavelength is important because shorter wavelengths pack more energy in them. It means that the more you are exposed to blue light, the higher your exposure to such energy.

While there is a misconception that gadgets only emit blue light, that's not true. There are natural sources of blue light, for example, the blue sky visible during the daytime.

The problem, however, is that we are exposed to the blue sky only for a limited time during the day. Evolution of Thousands of years has taught us that blue light signifies the daytime, so we are most alert and energetic during the day.

On the other hand, after the invention of gadgets like the smartphone and the computer monitors, we are exposed to blue light throughout the day and thereby our body experiences confusion. Because of the same, your sleep cycle can be altered if you are exposed to a significant amount of blue light. This is especially true if it is from an artificial source. Excessive exposure to such light can also result in eye fatigue, even during the daytime.

Another side effect is dry eyes. If your overall exposure to such light is over ten hours every day, you will suffer from dry eyes sooner than later.

This is where blue light glasses come into the picture. The purpose of such glasses is to help you use your gadgets with little to no side effects. Their job is to filter the blue light emitted by the gadgets and not let it pass through the lenses.

Are Blue Light Glasses effective?

While there is some confusion regarding the same currency, the American Academy of Ophthalmology doesn't recommend them.

A study is currently being conducted to analyze the benefits of blue light glasses in greater detail.

The current research is in favor of blue light glasses.

According to a 2017 clinical trial result, there is little evidence that blue light-blocking glasses can help you prevent the side effects like dry eyes or protect your eyes against blue light.

Another study in the same year concluded that 33% of the participants who used blue-light-blocking sunglasses experienced the same benefits. The benefits included reduced glare and better vision while using such screens. That is why; there might be some conflict of interest in the findings of this study. However, it is good to take these findings with a pinch of salt since the study was funded by Swiss lens laboratory LTD, which manufactures light-blocking lenses.

Tips to reduce blue light exposure:

Fortunately, blue light glasses aren't the only way to reduce exposure to blue light. A few simple tips can help you do the same.

  • Take frequent breaks: staring at a computer screen or smartphone consistently negatively affects the eyes. It is advisable to take a break in between. During these breaks, walk outside and view the natural world rather than your screen. That way, you also gain vitamin D and a much-needed break.
  • Use dim lights: it is a good idea to use dim lights in your bedroom. That won't disturb your circadian rhythm.
  • Take up an off-line hobby: indulge in an off-line hobby that does not require you to stay at any kind of screen or gadget. It can be as simple as reading or knitting.
  • Bulb-free light bulbs: in your home, you can install these bulbs which emit very little blue light.
  • Do not use the screens in your bedroom: You need to avoid using screens for 3 to 4 hours before you sleep in your bedroom and your home.
  • Create a screen-free zone in your home: whenever you are in that area, it is a good idea to avoid blue light exposure completely.
  • Do not ignore tries: use over-the-counter eye drops to treat symptoms of dry eyes.

Technology tips to follow:

  • Use an away message: when you want to reduce your screen time or blue light exposure, use a message or an email signature that lets others know you aren't online.
  • Use night mode on your gadgets: most gadgets these days come with either night mode or wind down mode. These reduce the blue light emission. Whenever possible, activate these modes.
  • Use screen protectors: screen protectors for your phone and your laptop, which can reduce exposure to blue light.

Blue light side effects:

According to this report, consistent exposure to blue light can lead to eye strain and fatigue. Another research report in 2011 stated that it could result in computer vision syndrome. Its symptoms include:

It is also common for the blue light to hamper the production of melatonin which is known as the sleep hormone. Consequently, your sleep quality deteriorates. It also impacts your hormonal balance. The stress handling capacity of the body is also reduced because of the same.

Should you consult a doctor?

Using the above tips, if you aren't able to eliminate the eye strain and the dry eyes, speak with the ophthalmologist. Other than that, if you experience any of the problems below, then you should speak with an eye doctor.

  • Consistent eye strain
  • Prolonged dry eyes
  • Decreased vision quality
  • Blurred vision


When it comes to glasses for blue light elimination, there is no clear word. However, by using the other tips highlighted above to reduce the blue light exposure and block it, you can easily get some relief from excessive exposure to blue light and also eliminate most symptoms associated with it.

Leave a Comment