In today's digital age, the topic of blue light exposure has sparked considerable debate：

On the one hand, some people are skeptical, believing that blue light emitted from screens of devices such as smartphones, tablets and computers does not pose a serious risk to health, but is just anxiety created by manufacturers to promote their products. They believe that nature is full of blue light, mainly from the sun, so screen exposure is insignificant. Some people do not believe in blue light at all, thinking it is something illusory.

On the other hand, some people acknowledge the existence of blue light and its potential impact on eye health. For these people, using anti-blue light screen protectors is seen as a practical solution to mitigate the negative effects of long-term screen time.

In fact, blue light does exist, and blue light is not all harmful. Blue light between 480 and 500 nanometers has a role in adjusting biorhythms, which is related to sleep, mood, memory, etc., and is beneficial to the human body; what is really harmful is high-energy blue light within 400 to 460 nanometers, especially short-wave blue light with a wavelength of 435-440 nanometers, which is most harmful to the retina. Long-term exposure to blue light can cause damage to retinal cells, leading to decreased or even loss of vision. There are many authoritative works to prove this:

American Academy of Ophthalmology (AAO): This authoritative organization has issued guidelines on blue light, discussed the possible effects of digital screens on the eyes, and mentioned that blue light may cause digital eye fatigue.

National Eye Institute (NEI): This organization has supported and conducted a series of studies on the effects of blue light on retinal health. Studies have shown that high-energy blue light may be potentially toxic to retinal cells, and long-term exposure may cause retinal damage.

Reports published by some authoritative organizations such as the World Health Organization (WHO) and the American Academy of Ophthalmology also mentioned that although blue light exists naturally, the intensity and duration of its source may be potentially harmful to the eyes. Such reports recommend that people take appropriate measures to protect their eyes, especially when using electronic devices for long periods of time.

Although research on the effects of blue light is still ongoing, there is scientific evidence that moderate blue light is beneficial, while excessive blue light, especially from artificial light sources, may cause discomfort and health risks. Therefore, taking appropriate precautions, such as using blue light blocking glasses or screen protectors, and arranging the time of using electronic devices properly, will help reduce potential blue light hazards.

PERFECTSIGHT screen protector uses self-developed rare earth coating technology to achieve protection against harmful blue light. Through the "radar absorption principle" of the F22 stealth fighter, rare absorbing materials synthesized from multiple layers of rare earth elements can eventually achieve a blue light radiation filtering rate of >55% in the 380nm-480nm spectrum band; the high-energy short-wave blue light interception rate in the 435-440 nanometer band reaches 55%-70%, reducing the irreversible damage caused by blue light to the eyes.

While pursuing technological convenience, we should pay more attention to health and protect our eyes. With the continuous deepening of relevant research, people will have a better understanding of blue light and its effects in the future, and will be able to use various digital devices more scientifically and reasonably, thereby achieving a balance between digital life and health.