Blue light is part of the visible light in the natural environment. In the visible light spectrum to our eyes, there are mainly seven colors: red, orange, yellow, green, blue, indigo and violet. The shorter the wavelengths of visible light, the higher the energy of the wave. Blue light is powerful and it can penetrate the entire structure of the eye, eventually causing various problems to our eyes. In fact, blue light is commonly found in computers, mobile phones, sunlight, projectors, LED lights and so on, and these blue light emitted by electronic products is the source of harmful blue light.

In today’s society, many young people are inseparable from electronic devices. For example, office workers must work in front of the computer everyday. Besides, due to this outbreak, pupils and teachers have been forced to use electronic devices to learn and teach, which has also led to increased use of electronic screens. In fact, it is now easy to see that everyone has to use their mobile phones whenever they are, even when they are eating or waiting for the bus. Furthermore, children nowadays have become addicted to electronic devices.

However, prolonged exposure to electronics can cause free radicals to form in the eye, further damaging retinal cells in the eye. In addition, looking at electronic screens for a long time can cause eye strain, dry corneas, chronic inflammation and eye diseases that can affect visual health. If we don’t protect our eyes in time, these harmful blue light can eventually cause macular deformities in the eye and can even lead to permanent blindness.