Blue light glasses really work

In recent years, a type of blue light glasses has appeared on the market. Blue light glasses are said to protect glasses from radiation and damage from computer and mobile phone screens. Nowadays, more and more people are using computer screens, which can cause eye damage if they are not careful. The most important factor is blue light. But there are so many types of blue light glasses on the market, how do we choose? Do blue light glasses really work?

1. Blue light hazards

1. Damage to eyes: Harmful blue light has extremely high energy and can penetrate the lens directly to the retina, causing atrophy or even death of retinal pigment epithelial cells. The death of light-sensitive cells will lead to decreased vision or even complete loss of vision, and this damage is irreversible. Blue light can also cause macular degeneration. The lens in the human eye absorbs some blue light and gradually becomes cloudy to form cataracts, while most of the blue light will penetrate the lens. Especially in children, the lens is clearer and cannot effectively resist blue light, which makes it more likely to cause macular degeneration and cataracts.

2. Visual fatigue: Due to the short wavelength of blue light, the focal point is not at the center of the retina, but a little closer to the retina. In order to see clearly, the eyeballs will be in a tense state for a long time, causing visual fatigue. Long-term visual fatigue may cause people's myopia to worsen, double vision, serial reading, inability to concentrate and other symptoms, affecting their learning and work efficiency.

3. Poor sleep: Blue light will inhibit the secretion of melatonin, which is an important hormone that affects sleep. Its known functions are to promote sleep and adjust jet lag. This also explains why playing with mobile phones or tablets before going to bed can cause poor sleep quality or even difficulty falling asleep.

Manufacturers of various LED light-emitting display devices such as TVs, computers, PADs and mobile phones often increase the blue light intensity of LED backlight sources to make their picture quality brighter and more beautiful. With the popularization of these electronic products and their penetration into all aspects of life, everyone's chance of exposure to blue light has increased dramatically. For ordinary people, blocking long-term exposure to blue light is the most effective way to reduce damage, and using anti-blue light glasses can effectively solve this problem.

2. Function

Anti-blue light glasses can effectively reduce the continuous damage of blue light to the eyes. Through comparative testing with a portable spectrum analyzer, after using anti-blue light glasses, the intensity of blue light emitted by the mobile phone screen is effectively suppressed, reducing the damage of harmful blue light to the eyes.

Anti-blue light glasses mainly reflect harmful blue light through lens surface coating, or absorb harmful blue light by adding anti-blue light factors to the lens substrate, thereby blocking harmful blue light and protecting the eyes.