In 2014, the China National Institute of Standardization's Visual Health Laboratory and the Retinal Reproductive Medical Research Group of Wenzhou Medical University published a report on blue light damage to the retina in Molecular Cell Biology. The experimental results show that the peak spectrum of blue light is 460-500 nm, and the illuminance exceeds 1500 lx (unit of lux, illuminance). After continuous direct exposure for more than 3 hours, the cell viability decreases and apoptosis occurs.
Although there are experimental data showing that blue light is harmful to the eyes, experts stress: "The effect of blue light on photoreceptor cells and retinal cells is now based on experiments with animals and cultured cells. There is no evidence of how much illumination and how much blue light is needed. Time can cause damage to the living human eye."
"The existence of blue light is reasonable." Experts said that blindly filtering out blue light is also likely to cause a decline in visual acuity for the elderly.
High blocking rate causes color deviation to make eye fatigue, and it is even worse to use it after wearing it.
Engaged in the IT industry for a long time facing the computer, children always watching TV at home, holding mobile phones all day long... Consumers choose a variety of anti-Blu-ray glasses for a variety of reasons. But do you think that the glasses you bought really prevent Blu-ray?
According to ophthalmologists, the anti-blue glasses on the market now block or absorb blue light through special materials. At present, there are two misunderstandings in Blu-ray protection. One is that the defense is not protected, and the other is the visual fatigue caused by the color shift caused by false protection.
“The blocking rate of anti-Blue-ray glasses is 20%-30%.” Experts say that the blocking rate of anti-blue glasses on the market is basically 80%-90%. However, the band of the protection is not protected, and the high blocking rate also causes color shift, which makes it easier for the eyes to fatigue.
Experts who have been engaged in refractive research for many years say that they never actively recommend patients to wear anti-blue glasses. He also does not advocate the use of anti-blue glasses as a "altitude", and wears them in an uncontrolled manner. He pointed out that in the north, the air is dry in winter, normal people do not use computers, mobile phones and other products, and the eyes will appear dry. Therefore, it is more important to use eyes and protect eyes than to wear anti-blue glasses.