Where does blue light come from? Applying Screen protectors properly without annoying bubbles or dusts for phones and tablets can be the most frustrating job. In this article you’ll get some useful tips on how to put on a screen protector directly to avoid any bubbles or trapped dirts. This methoud apply to different mertials’ screen protecotr for phone and tablets like tempered glass, plastic, PET film, liquid film, etc. After aligning the upper part, slowly adjust the position of the whole screen protector appropriately to ensure the position is correct, and then place the lower half on the screen.

But too much exposure to UV causes a painful sunburn — and even worse, can lead to skin cancer. These rays also can cause sunburned eyes — a condition called photokeratitis or snow blindness. But ultraviolet radiation, in moderation, also has beneficial effects, such as helping the body manufacture adequate amounts of vitamin D.

The Different Types of Screen Protectors, First: Tempered glass screen protector. Tempered glass also called toughened glass belongs to safety glass, which plays a good protective role for mobile phone safety. Its characteristics are explosion-proof, scratch-resistant, wear-resistant, and the hardness can reach to 9H (even stroked with a knife), prevent the rupture of the tempered glass caused by accidental impact of the mobile phone from harming the screen and the human body. Easy to paste, no bubbles, the screen transmittance is up to 93%. It can prevent the harm of electronic waves to the human body. Feels better when used with sensitive touch.Read extra info on https://www.perfectsight.co/tutorials/how-to-choose-a-cell-phone-screen-protector.html.

Anything above 380 nanometers is not visible to the human eye and cannot be seen. While invisible, these frequencies can still be useful. Some epoxies used in dental work use ultraviolet light to accelerate the chemical process of fixing teeth. Tanning beds use these frequencies to artificially increase tan color (though of course you wouldn’t want to be bathed in it for hours, or you could develop significant health problems).

Dry eye can result in a series of problems with your eyes apart from making your eyes irritated or itchy. Although dry eyes can be linked to your age, you can take measures to prevent it, like using eye drops or turning on the humidifier in your home or office to relieve the condition. If it persists, you can contact your optometrist for advice or treatment. You may have to stop diuretic medicine. If you walk in the sun often or the nature of your work requires spending a few hours in the sun, protect your eyes by wearing sunglasses to protect your eyes from the ultraviolet rays that come from the sun. The ultraviolet rays can damage your eyes. Why endangering your eyes when you can get a good pair of sunglasses for a few bucks?

Blue light exposure may increase the risk of macular degeneration. The fact that blue light penetrates all the way to the retina (the inner lining of the back of the eye) is important, because laboratory studies have shown that too much exposure to blue light can damage light-sensitive cells in the retina. This causes changes that resemble those of macular degeneration, which can lead to permanent vision loss. Although more research is needed to determine how much natural and man-made blue light is “too much blue light” for the retina, many eye care providers are concerned that the added blue light exposure from computer screens, smartphones and other digital devices might increase a person’s risk of macular degeneration later in life. Find additional info at perfectsight.co.