Why do glasses need blue light coating?

In today’s digital age, almost everyone can’t live without electronic devices, whether it’s using cell phones, computers, or playing games, staring at the screen for a long time has become a daily routine. Do you find that after a long time looking at the screen, your eyes will feel dry, fatigue, and even some headaches? This actually has a lot to do with the blue light we are exposed to every day. Although blue light itself is not completely harmful, prolonged exposure to blue light, especially that emitted by electronic devices, may cause quite a lot of trouble to the eyes.

In order to minimize the damage of blue light to the eyes, blue light coated glasses have become an effective way to protect your eyes. So, why is blue light coated glasses so important? What benefits can it really bring to our eyes? Today, let’s find out together how to choose the right pair of blue light coated glasses to protect your eyes and enhance your comfort according to your needs.

What exactly is blue light?

Blue light is the shortest part of the spectrum of wavelengths, located between 400-500 nanometers, and while it is not entirely harmful in itself, its characteristics dictate that it can have an effect on the eyes. The sunlight we usually see is a mixture of different wavelengths of light, of which blue light is an important part of sunlight. During the day, the right amount of blue light can help us stay awake and alert, and it also helps regulate our biological clocks, making us more energized.

The problem, however, is in modern life. In addition to sunlight, man-made light sources emit blue light, especially the electronic devices that we come into contact with every day – whether it’s cell phones, computers, TV screens, tablets, or game consoles – that are constantly emitting blue light. The blue light emitted by these electronic devices is much stronger in energy than natural light, and gazing at these screens for long periods of time, especially in dimly lit environments, puts a greater burden on the eyes.

We face the screen of the electronic screen for a long time every day, the eyes will be exposed to a higher intensity of blue light, especially at night, we are usually accustomed to use a cell phone or watch TV before going to bed, the blue light of the screen is not only irritating to the eyes, but also may affect the quality of our sleep. Although blue light does not directly cause immediate eye damage, if exposed to it for a long period of time, eye fatigue will gradually accumulate and may even bring about vision problems.

A moderate amount of blue light is beneficial, especially during the day to help us stay alert and focused, but if we are exposed to blue light from electronic devices for a long period of time without protection, it may cause certain effects on our eyes and even accelerate vision loss. Therefore, in order to reduce the burden of blue light on the eyes, the blue light coating technology for glasses has come into being, which can effectively reduce the harm of blue light on the eyes and enhance the comfort and health of our eyes.

Harmful effects of blue light on eyes

We all know that when we use electronic devices for a long time, such as looking at cell phones and using computers, our eyes tend to feel tired, dry, and even painful, but do you know why? This is mainly because of the effect of blue light. Although the direct damage of blue light to the eyes is not as obvious as ultraviolet rays, it can cause a lot of trouble in the long run if you don’t pay attention to protection.

Causes visual fatigue

Staring at a cell phone or computer screen for a long time, our eyes can easily feel fatigued, especially when we concentrate on our work or study for a few hours, our eyes will become dry, sore and even start to hurt. This is because blue light puts the ciliary muscle in the eye under constant tension, like a spring being pulled all the time. The role of the ciliary muscle is to help the eyes focus, and when it’s under constant tension, it can lead to excessive eye fatigue, and over a long period of time, the flexibility of the eyes will decrease and vision will tend to become blurry. This is why we often feel blurred vision and eye discomfort when using electronic devices.

Damage to retina

The retina is the place inside the eye responsible for receiving light and converting it into nerve signals. Blue light is so penetrating that it can penetrate the surface of the eye and reach the retina directly. When we are exposed to high-energy blue light for long periods of time, it can cause damage to the light-sensitive cells in the retina. When these cells are damaged, the normal function of the retina will be affected, and over time, this may lead to some serious eye diseases, such as retinopathy, or even affect vision. Worse still, studies have shown that prolonged exposure to blue light may increase the risk of age-related macular degeneration (AMD), which is one of the leading causes of vision loss in the elderly.

Affects sleep quality

In addition to harming our eyes, blue light can also affect the quality of our sleep. Our bodies have an internal biological clock, and blue light works throughout the day to help us stay awake and alert, but at night, too much blue light stimulation suppresses the secretion of melatonin, the hormone that helps us fall asleep. Modern people are accustomed to swiping their cell phones, watching computers or TVs before bedtime, and the blue light emitted by these devices can disrupt our biological clocks, leading to difficulties in falling asleep, a decline in the quality of sleep, and possibly even insomnia and light sleep. In the long run, the lack of quality sleep will affect our physical health and even lead to the occurrence of some chronic diseases.

The harm of blue light goes far beyond fatiguing our eyes, it can also cause potential damage to the retina and even affect our sleep quality. Therefore, in this era of popularization of electronic devices, it becomes especially important to learn how to protect our eyes from blue light.

How Blue Light Coating Works

When we hear the term “blue light coating”, we may wonder how it works and why it can effectively protect our eyes. In fact, the principle of blue light coating is not complicated, it is realized by adding a layer of special film on the surface of glasses lenses.

How Blue Light Coating Works

Blue Light Coating is an optical technology that coats the surface of the lens with a thin layer of special film that acts like a “blue light filter”. This film acts like a “blue light filter”. Through the principle of optical interference, some of the wavelengths of blue light are reflected or canceled out, thus reducing the intensity of the blue light that enters the eyes through the lenses. Simply put, when blue light hits a coated lens, it is reflected between the different layers of the film, and these reflected blue light interferes with each other so that some of the blue light is “weakened” or “canceled out”, thus reducing the amount of harmful blue light to which the eyes are directly exposed.

In this way, blue light coating can effectively reduce the amount of blue light emitted from the screens of electronic devices into the eyes, without affecting the clarity of our normal vision. This is like adding a protective barrier to the eyes, protecting them while maintaining normal vision.

Reducing Blue Light Intake

Improved Visual Comfort

In addition to effectively reducing the damage of blue light to the eyes, blue light coated glasses have another important role, that is, to improve visual comfort. When we reduce the stimulation of blue light, our eyes will feel more relaxed and less prone to fatigue. When you stare at the screen of electronic devices for a long time, your eyes tend to feel heavy, dry and painful, and blue light coated glasses can effectively reduce these symptoms, so that you can maintain a higher level of comfort even when you use electronic devices for a long time.

In addition, blue light coating also reduces the interference caused by reflected light from the lenses. Often times, especially in environments with complex lighting, such as offices or cafes, the reflected light from the lenses may interfere with our vision. Blue coated lenses can effectively reduce this reflected light, allowing us to maintain a clear and comfortable visual experience in different light conditions.

Blue light coating is not just about blocking blue light, it also greatly improves our visual comfort, reduces eye discomfort and protects our eyesight. For people who are exposed to electronic devices for a long time, wearing blue light coated glasses is a very worthwhile option to consider, which can effectively reduce the burden on the eyes and keep them healthy.

People who are suitable for blue light coated glasses

The emergence of blue light coated glasses can help these people effectively reduce eye discomfort and protect their eyesight. So, which groups of people are especially in need of blue light coated glasses? Let’s take a look.

Heavy users of digital products

With the development of technology, many people are using electronic devices almost every moment. Whether it’s office workers, students, or game enthusiasts, we are in contact with computers, cell phones, tablets, and other screen devices every day. Especially office workers, sitting in front of a computer for 8 hours a day or even longer, their eyes are often stimulated by blue light, which makes them prone to dryness, soreness or blurred vision. At this time, wearing blue light coated glasses can effectively reduce eye fatigue and minimize the damage of blue light to the eyes.

For example, office workers who use electronic devices for a long time every day may experience more and more serious symptoms of eye fatigue if they do not take measures to protect their eyes, which may affect their work efficiency. Wearing blue light coated glasses can significantly alleviate these discomforts, giving the eyes an effective rest and helping to improve work efficiency.

Middle-aged and Elderly

With age, the lens of the eyes will gradually age, at which time the protective ability of the eyes will be reduced, especially the ability to filter blue light is weakened, resulting in the retina being more susceptible to damage by blue light. The middle-aged and elderly population may also face some age-related eye diseases, such as cataract and macular degeneration, etc. Long-term exposure to blue light may accelerate the occurrence of eye problems.

For middle-aged and elderly people, wearing blue light coated glasses not only reduces the burden on the eyes and protects vision, but also effectively prevents further damage to the eyes from blue light. As we age, eye health becomes especially important, and choosing the right pair of blue light coated glasses can provide more protection for seniors’ eyesight.

Teenagers and Children

Nowadays, many teenagers and children are also getting in touch with electronic devices. Whether it’s studying, playing games or watching videos, facing the screen for a long time has become the norm. As children’s eyes are still in the developmental stage and relatively fragile, the impact of blue light on them is more pronounced. If left unprotected, long-term blue light stimulation may affect the normal development of your child’s eyes.

Fitting children and young adults with a pair of blue light coated eyeglasses can help reduce the effects of blue light they are exposed to when using electronic devices and protect their eye health. By reducing the stimulation of blue light, children can not only maintain better visual comfort while studying or playing, but also effectively reduce eye fatigue and discomfort and promote healthy eye development.

People who often stay up late

Some people are used to staying up late, especially using cell phones, computers or watching TV for a longer period of time at night. Blue light stimulation at night can interfere with the biological clock and affect the secretion of melatonin, thus affecting the quality of sleep. For a long time, this may lead to sleep disorders or health problems. Blue light coated glasses can help alleviate sleep problems while reducing blue light.

For people who often stay up late, wearing blue light coated glasses can effectively reduce the impact of blue light on the biological clock, help maintain a healthier routine and sleep quality, and improve eye discomfort caused by blue light.

Professionals who need to use their eyes for a long time

In addition to the above people, some professionals who need to use their eyes for a long time, such as designers, painters, etc., need to observe the details of the work for a long time. For these professionals, their eyes are affected by blue light for a long period of time, which will increase fatigue and even affect their work performance. Blue light coated glasses can reduce eye discomfort, help them maintain clearer vision and minimize errors caused by eye fatigue.

How to choose the right pair of blue light coated eyeglasses

Choosing the right pair of blue light coated eyeglasses is actually not complicated, as long as you understand your needs and pay attention to some key details, you can easily choose the most suitable glasses for you. With more and more types of blue light coated eyeglasses available on the market, there are a few more aspects to pay attention to when choosing them, to make sure that they protect your eyes as well as feel comfortable to wear. The following points can help you pick the most suitable blue light coating glasses.

Check the product parameters

When choosing blue light coated eyeglasses, the first thing to look at is the blue light blocking rate of the eyeglasses. Simply put, the blue light blocking rate is how much blue light the glasses can filter. Generally speaking, products with a blue light blocking rate of around 30%-50% can effectively block some of the harmful blue light without unduly affecting your normal vision, and the colors will not be distorted. Remember, the higher the blocking rate, the better, because if the blue light blocking rate is too high, the lenses may have a yellowish effect, affecting the accurate color perception. For users who need accurate color perception, such as designers or painters, choosing a moderate blocking ratio is most appropriate.

Choose a regular brand

Try-On Experience

When choosing eyeglasses, trying them on is a very important step. Even with blue light coated glasses, make sure the lenses are clear and comfortable. If the lenses have noticeable distortion, chromatic aberration or other defects, it is recommended to get a different pair. During the fitting process, it is also important to feel how comfortable the glasses are to wear, including the weight of the frames and whether the design is appropriate for the pressure on the bridge of the nose and ears. If the glasses are uncomfortable to wear, prolonged wear may lead to headaches or discomfort. Therefore, it is important to make sure the glasses are comfortable during the fitting process and not just look at the appearance.

Choose a style according to your personal needs

Confirmation of after-sales service

When purchasing blue light coated glasses, apart from focusing on the quality and performance of the lenses, after-sale service is also a very important factor to consider. Regular brands usually provide quality after-sales service to help you answer questions on wearing, provide repair and replacement services. If there is a problem with the glasses, they can be dealt with in time to avoid the trouble caused by quality problems. Therefore, you can learn about the brand’s after-sales policy before buying to ensure a worry-free purchase.

Conclusion

With the popularity of electronic devices, our exposure to blue light is inevitable, especially for those who use computers and mobile phones for a long time, who are more susceptible to the effects of blue light. In order to protect our eyes and reduce the negative effects of blue light, blue light coated glasses are undoubtedly a very good choice. It can help us reduce visual fatigue, improve sleep quality, and protect retinal health.

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