Blue light, also known as high-energy visible light, is relatively high-energy light with a wavelength between 380 nm and 500 nm. Blue light in this wavelength range will increase the amount of macular toxin in eyes, seriously threaten our fundus health and even induce blinding eye diseases.
With the increase of age, the lens of the human body will gradually turn yellow. This helps to filter blue light. However, after cataract surgery, patients lose these natural barriers. Blue light will directly reach the retina, and then damage retinal pigment epithelial cells, seriously affecting the health of the fundus.
After the blue light enters the fundus and focuses, the focus does not fall on the retina, but between the retina and the lens. This increases the chromatic aberration distance at which light is focused in the eye. The distance between the focal points in the eye is the main cause of blurred vision, so blue light will aggravate chromatic aberration and blurred vision, and then make the eye muscles excessively tense, the blood supply to the eye excessively tense, and the blood supply to the eye is strengthened, thus aggravating fatigue.
Blue light is high-energy light with a wavelength of 380nm-500nm, which has a long projection range (LED lamps with high blue light content will illuminate a longer distance), mainly because particles in the air are easy to scatter when they meet (headlights are easy to scatter when turned on, leading to fog in front of their eyes).