Good blue glasses should protect your eyes. If the blue glasses are harmful, it may be because they are uncomfortable.

There are generally two kinds of anti-blue lenses:

1, daily universal type, the blocking rate of blue light is about 20%, that is to say, it can block 20% of blue light from entering the eyes and reduce the damage of blue light to the eyes. Although the lens looks slightly yellow because of blue light prevention, it can be used in computers, televisions, mobile phones and other devices, and can also be used in daily life.

2, anti-Blu-ray PRO version, which is an upgraded version of anti-Blu-ray, is more about the improvement of anti-Blu-ray blocking rate, which can block 40% of Blu-ray from entering the human eye. This kind of lens is more suitable for people who use computers, televisions, mobile phones, etc. It has been a long time. However, the higher the blocking rate of blue light, the yellower the background color of the lens will be. In daily use, the brightness of things will decrease, but people will feel tired when they look at things. This may be what you call injury.

Another possible hazard is that for people who are picky about colors, such as graphic designers, it is recommended to use anti-blue lenses with caution, because it may cause color cast in the picture.

Therefore, a good anti-blue lens is not too harmful, but more harmful to improper use.