Blue light is the visible spectrum with the shortest wavelength and highest energy. Similar to ultraviolet light, blue light is both beneficial and dangerous. Sunlight is the main source of blue light, and we are exposed to a lot of blue light during outdoor activities during the day.

　　As technology continues to evolve, we spend more and more time on smart device screens. The display screens of computers, notebooks, smartphones and other digital devices also emit a lot of blue light. Although the HEV light emitted by these devices is only a small fraction of the sun's emissions. However, as the eyes are in close contact with these screens for longer and longer, this can cause many health hazards.

　　The anterior structure of the adult eye (the cornea and lens) effectively blocks the UV rays from reaching the photosensitive retina at the back of the eye. In fact, even if you don't wear sunglasses, less than one percent of the sun's ultraviolet radiation will reach the retina. But almost all visible blue light can pass through the cornea and lens and reach the retina.

　　Blue light penetrates all the way into the retina (the inner layer of the back of the eye), which can damage the light-sensitive cells in the retina. This can lead to changes similar to macular degeneration, which can lead to permanent vision loss. Many ophthalmologists are concerned about the increased blue light on computer screens, smartphones and other smart device screens that increase the risk of macular degeneration in later life.

　　Due to the short wavelength, high-energy blue light is more easily scattered than other visible light, so it is difficult to focus. This unfocused visual "noise" reduces contrast and causes eye strain when you look at computer screens and other smart device screens that emit a lot of blue light.

　　But not all Blu-ray is harmful!

　　Blue light is essential for good health. Studies have shown that high-energy visible light can increase alertness, contribute to memory and cognitive function, and enhance mood. In addition, blue light is very important for regulating the circadian rhythm, the body's natural awakening and sleep cycle. Exposure to blue light during the day helps keep the body's circadian rhythm.

　　Screen blue light can damage the cornea (photokeratitis), lens (cataract), conjunctiva (pterygium) or retina (macular degeneration) and so on. Just like you use a moisturizer to protect your skin, your eyes need to be protected! Anti-blue film can help you care for your eyes, the manufacturer contact phone 13433007870!