What is blue light?
What are blue light blocking glasses? How to remove the old phone or tablet screen protector? Prepare all the relevant tools and materials. The phone, Alcohol pad, Dust absorber, Cleaning cloth, New screen protector, Squeeze card. First of all, we should remove the old screen protector of our phone. Pick up one corner of the screen protector with a sharp object like credit card. I choose a knife. Everyone chooses according to the tools at hand. Pay attention to pull up the screen protector and do not scratch the phone screen.
What is blue light? Sunlight contains red, orange, yellow, green and blue light rays and many shades of each of these colors, depending on the energy and wavelength of the individual rays (also called electromagnetic radiation). Combined, this spectrum of colored light rays creates what we call “white light” or sunlight.
In daily artificial lighting, when the illumination is 100–300lx and the flash frequency is not less than 150HZ, the light is more suitable for the human eyes. When the illumination is too strong, and the flash frequency is insufficient, it is easy to cause eye fatigue, which may cause ametropia in the human eye. When watching the mobile phone for a long time, the glare that is constantly flashing on the screen will cause continuous stimulation to the eyes. When the eyes keep capturing these light and shadows, the eyes will feel tired and cause damage to the tear film on the surface of the eyeball, causing dry eyes and deepen the myopia. See more info on https://www.perfectsight.co/eye-care/anti-glare-eye-care-screen.html.
Adults have their own issues to deal with. As we age, our eyes “remember” and retain energy. Blue light not only penetrates all the way to the retina in the back of the eye, it builds up over time. The cumulative effect causes eye strain, dry eye, and unnecessary exhaustion. Because of its temperature and frequency, blue light tends to affect both the retina and the cellular anchors, leading to early onset of Advanced Macular Degeneration, an issue which must be corrected through surgery. Consistent melatonin disruption has also been linked in recent studies to an increased risk of obesity and some cancers.
You may be wondering why using a computer is so much harder on your eyes than reading printed materials like a book or magazine. The main reason is that when we stare at computer screens, we tend to blink less. In fact, while focusing on digital displays, a person’s blink rate can be reduced by a third to a half, which causes their eyes to dry out. Additionally, many of us are not viewing these screens from the optimal distance. In recent years, a popular solution to this problem has been blue light filters; namely, expensive computer glasses. However, these glasses, as well as other blue light filters, are no more effective at reducing the symptoms of eye strain than a neutral filter. Instead of spending money on something that may not help, try these simple and effective tips first.
Because short-wavelength, high energy blue light scatters more easily than other visible light, it is not as easily focused. When you’re looking at computer screens and other digital devices that emit significant amounts of blue light, this unfocused visual “noise” reduces contrast and can contribute to digital eye strain. Research has shown that lenses that block blue light with wavelengths less than 450 nm (blue-violet light) increase contrast significantly. Therefore, computer glasses with yellow-tinted lenses may increase comfort when you’re viewing digital devices for extended periods of time. The lens in the adult human eye blocks nearly 100 percent of the sun’s UV rays. As part of the normal aging process, the eye’s natural lens eventually blocks some short-wavelength blue light as well — the type of blue light most likely to cause damage to the retina and lead to macular degeneration and vision loss. Read even more details on here.
