During the COVID-19 epidemic, many students had to take classes online, and the children watched the screen for a long time. Many parents worry that their children's eyes can't stand it. Recently, a kind of anti-blue glasses, which claims to relieve visual fatigue and prevent myopia, has become popular. Obviously, the upsurge of online classroom virtually ignited the sales of anti-blue glasses.

blue light proof glasses

So, what is this blue light?

Sun Wei, director of the Eye Hospital affiliated to Shandong University of Traditional Chinese Medicine, said that blue light is visible light in the range of 380-500 nanometers and blue light in the range of 450-500 nanometers, which we call "beneficial blue light", and this blue light can maintain the normal rhythm of each of us.

It was found that short-wave blue light below 450 nm would damage retina. Anti-blue lens can play a certain role in preventing blue light, but anti-blue light does not mean anti-myopia. Dr. Sun Wei said that after children wear anti-blue lenses, due to the influence of special lens materials, the light transmittance will decrease, and long-term wearing may also affect the development of color vision. Therefore, it is not recommended that children wear anti-blue glasses for a long time. In addition, experts also advise parents to choose a screen with a larger font for their children, so that children can maintain a good sitting posture and good eye habits.

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