What does blue light filter do: UV rays have higher energy than visible light rays, which makes them capable of producing changes in the skin that create a suntan. In fact, the bulbs in tanning booths emit a controlled amount of UV radiation specifically for this reason.

High energy light is crucial to everyday life. We get high energy visible light from the sun, and it helps us regulate our sleeping patterns. During the daytime, the light that comes into our eyes releases enzymes in the morning, bringing melatonin levels down and helping us wake up. A consistent cycle of rest and wake, regulated by melatonin, comprises our circadian rhythm. This cycle can easily be disrupted. Fly to another country, or stay up too late, and the rhythm can change. Shift into blue light use, and disruption can easily occur. Artificial blue light before bed reduces the amount of melatonin being released in the body. Too little melatonin, too late, can prevent sleep and lead to exhaustion.

Blue light is everywhere in digital screen’ world. But you might be wondering what does all this screen time mean for our eyes? A convenient way to reduce your blue light exposure is to use a blue light filters for your iPhone, iPad, MacBook and protective eyewear. Blue light filters are some special tools applied special craft or materials that could blocks light in the 380-500 nanometer range. Usually we call these tools as blue light filter: blue light screen protectors, blue light blocking glasses or lenses, anti blue light app, blue light filting lights and so on. Read a few more info on iPhone blue light filter.

Allow distance. Being too close to your screen is also a factor in how your eyes can be negatively affected—they have to work harder to see things that are closer. If possible, keep your monitor or screen about 25 inches away, or about an arm’s length away. Make sure to position the screen so your eye gaze is directed slightly downward. Adjust the brightness. When a screen is much brighter than the surrounding light, eyes have to work harder. If you can, adjust your room lighting and try increasing the contrast on your screen.

Like ultraviolet radiation, visible blue light — the portion of the visible light spectrum with the shortest wavelengths and highest energy — has both benefits and dangers. Here are important things you should know about blue light: Blue light is everywhere. Sunlight is the main source of blue light, and being outdoors during daylight is where most of us get most of our exposure to it. But there are also many man-made, indoor sources of blue light, including fluorescent and LED lighting and flat-screen televisions. Most notably, the display screens of computers, electronic notebooks, smartphones and other digital devices emit significant amounts of blue light.

What PERFECTSIGHT eye care screen protectors and eyeglasses do? PERFESIGHT eye care protectors (HD Clear Medical Edition or Matte Anti Glare Medical Edition) could blocks more than 55% of the blue light into eyes especially in about 450nm wavelength and reduce the damage of blue light to the eyes, really to be best blue light filter for deigital device. PERFESIGHT blue light blocking glasses could filter about 70% of the blue light from your phone,tablet, computer’ screen. Eye Care screen protectors tested by specially AMERICAN SOLAR LIGHT. Discover extra info on www.perfectsight.co.