Blue light is a short wavelength of light that has a big impact on our biological clock (circadian rhythm). On one hand, it helps us stay awake and focused, but on the other hand, if we are exposed to too much blue light at night, it can negatively affect our sleep.

Why does blue light affect sleep quality?

Suppresses melatonin production:

Our biological clock is very important for our health, and a disorder can lead to a number of mental or neurological problems. The effects of blue light are not only related to the composition of the light, but also to the time and intensity of our exposure to this light. Exposure to blue light during the day can suppress the production of melatonin, a hormone that helps us fall asleep and is produced by the pineal gland. While blue light is needed to stay alert and awake during the day, prolonged exposure to blue light before bedtime can make it harder to fall asleep, affecting the quality of our sleep and even disrupting our biological clock. Especially at night, blue light exposure can suppress melatonin production, making it difficult to fall asleep.

Prolonged wakefulness:

Blue light keeps the brain awake, causing us to have a harder time falling asleep. Studies have found that people who use electronic devices at night typically have a harder time falling asleep than those who don't.

Interferes with sleep quality:

Even if we are sleeping, the effects of blue light may not allow us to sleep deeply enough, causing us to wake up often or not sleep well enough, which can affect our overall restfulness.

How do anti-blue light screen protectors affect sleep quality?

Anti-blue light screen protectors typically utilize specific optical coatings that absorb or reflect specific wavelengths of blue light, altering the spectral distribution of blue light so that the percentage of blue light in the light that passes through the film is significantly reduced. As a result, the amount of blue light received by the user's eyes while using the device is reduced, thereby minimizing its impact on vision and biological clocks. For example, the self-developed rare earth coating technology used in PERFECTSIGHT can reduce blue light by at least 55%, which is very effective in reducing blue light exposure, relieving visual fatigue and improving sleep quality.

In order to improve sleep quality, it is very important to reduce the impact of blue light. Therefore, it would be a wise choice to consider having an anti-blue light screen protector when using electronic devices at night. Let's all value sleep and give ourselves a healthier lifestyle.