Preventing blue light is a very necessary thing for modern people. To effectively prevent blue light, it is important to understand the relevant principles before making rational judgments about various products and claims.

Blue light itself does not distinguish between good and bad, because the LED spectrum is extremely deformed, so it is necessary to prevent blue light glasses. Only when looking at an electronic screen, anti blue light glasses required. When matching glasses, do not add the "anti-blue light" function, as constantly emitting blue light can harm the eyes.

The phenomenon of "per capita addiction" in electronic products has only emerged in the past decade, and high-tech technologies such as the metaverse are also becoming increasingly popular. People only focus on experiencing the novelty in front of them, not thinking about it, and even if their eyes are almost dead, they do not care.

The blue light on the electronic screen is more harmful to the eyes than you imagine, but you cannot feel it (only 1.6% of the cone cells in the human eye can perceive blue). Preventing blue light is very necessary, and it will be too late when you feel something is wrong.

After trillions of years of evolution, it is self-evident that the human eye is most adapted to the spectrum of natural light (reflected sunlight), while LED screens have only experienced the phenomenon of "per capita addiction" in the past decade. Therefore, everyone present should not expect the human eye to evolve according to the LED spectrum at present, and should always guard against blue light.