What do blue light glasses do? And how much effective it is in the current glasses industry to keep our eyes protected. all are discussed here.
What is Blue Light?
The light we receive from our mother planet, Sun, contains many types of colored light each with a different wavelength and energy level. But they are packed together forming white light which we see in our daily lives. In this light, blue light has a specific range of light within the visible light spectrum and exists as a relatively short wavelength and high energy, which gives it a bluish color.
Other than Sun, the sources of blue light are many. There are also many man-made sources, and in recent years, blue light has gained notoriety because of its link to digital screens. Computers, tablets, smartphones, and other digital screens all emit blue light. This blue light can have a serious impact on your eye health levels.
It should be noted that there is no prestigious research showing that blue glasses can help to protect us from blue lights and their impact on our eyes. Although, they are now heavily used, but still more research is needed to confirm their actual benefits.
How do Blue Light Glasses Work?
These glasses are designed to filter out a portion of blue light emitted from digital screens and artificial light sources made by humankind. Since we just stated that blue light is a high-energy, short-wavelength light, and because of that, it can have a serious impact on the eyes if exposed for very long periods.
So, what do blue light glasses do, and how do they work? Well, it's pretty simple. These glasses come with a special amber or yellow tinting which makes them selectively filter the amount of blue light that reaches the eyes. The targeted blue part is effectively blocked, while still allowing other visible light to pass through. The light reaching the eye's cornea with filtered-out light brings ease to the eyes but the final value of blue light filtration may significantly vary depending on the type of glasses you are using. These glasses come in two types in the market.
The first type is "Coated Blue Light Glasses" which can reflect a portion of blue light away from the eyes with its thin layer of coating. This layer can reduce blue light transmission by 20 to 40 percent. The second type is "Tinted Blue Light" glasses which have a yellow or amber hue and can absorb specific wavelengths of blue light in the range of 400-450 nanometers to protect our eyes.
What are Blue Light Glasses' Benefits?
Below are the most commonly reported benefits of blue light glasses which are mostly accepted in the current industry:
1. Individuals who may have certain conditions like light sensitivity or types of migraines may find that reducing exposure to blue light or any other bright light can effectively help to counter headaches. This is the most significant benefit of these glasses.
2. Since they can reduce exposure to blue light in the evening, this can significantly interfere with the body's natural sleep-wake cycle. Using blue glasses can help with this problem and give you a normal sleeping cycle with your heavy workload in the day time.
3. Long sessions of focused screen time and exposure to blue light from smart devices including desktop machines and smartphones can contribute to eye strain and fatigue. They can help alleviate these symptoms leading to more comfortable & relaxed vision during extended device use.
4. Some individuals also report that these glasses also help to give relief when having dry eyes that can occur as a result of being in a dry environment.
5. They come with specialized filters that may enhance contrast perception, making objects appear clearer and sharper. This may be particularly beneficial for individuals engaging in tasks that require visual precision.
While the benefits of these glasses are quite significant, it should be noted that the extent and effectiveness of these benefits can vary among individuals. Additionally, individual experiences may differ, and the overall impact of blue light glasses may depend on factors such as the intensity and duration of blue light exposure, personal sensitivity, and specific visual needs.
It should also be noted that there is no prestigious research that supports the claims that these tinted and coated blue glasses can help to protect us from blue lights, at least in a significant way. Although, they are now heavily used, but still more research is needed to confirm their actual benefits. But many individuals report their possible benefits and the industry also has accepted blue light glasses on a very large scale.
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