The ideal blue-light blocking glasses need to satisfy three main criteria. First, they need to filter out or minimize your exposure to harmful high-energy, visible, blue light. Secondly, they should not produce any noticeable color distortion. Thirdly, they need to be comfortable and must match your eye doctor’s prescription to correct your vision if needed.
What is harmful about blue light?
What we see as white light or sunlight is a mixture of many colors of light. The different colors are called the spectrum of light. When you take a glass prism and pass white light through it, the different wavelengths of light split into the colors of the rainbow. These colors include the following;
- Red - Visible red light and invisible infrared light
- Blue - Visible blue light and invisible ultra-violet (UV) light
Red-colored light has the longest wavelength and the lowest amount of energy. Below the visible spectrum are the infrared waves of red light that produce heat.
At the opposite end of the spectrum is blue-colored light that can be seen, such as the color of the light emitted by a mobile phone or a computer screen and invisible ultra-violet blue light that has a very short wavelength and lots of energy. The UV light is the component of sunlight that causes sunburn.
Both visible blue light and UV light may damage the eyes. When skiing or snowboarding there is a phenomenon called photo-keratitis or snow blindness. This condition happens when the UV rays cause sunburn to the eyes.
This is why it is so important to wear protective glasses when going outside in the bright light, especially in an area with many light-colored reflective surfaces. The UV rays bounce off the reflective surfaces and into the eyes, causing damage.
Another source of damaging blue-light exposure comes from staring at a computer screen or mobile phone for a long time. This causes a condition called “computer vision” with the common symptoms of blurry vision, eye strain, and headaches.
Human vision is tuned towards the bluer end of the light spectrum. This means that about one-third of the light that we can see is in the blue range. This is the high-energy visible (HEV) blue light that protective glasses from Goggles N More block out. Wearing blue-light blocking glasses is a critical health-safety issue to prevent damage to the eyes from excessive HEV blue-light exposure.
The older styles of blue-light blocking glasses used yellow-colored lenses. These work to block blue light by converting it into a different color that has a longer wavelength with a lower energy that does not cause damage.
The problem is that yellow-colored lenses can distort all the colors so that the world looks different than it would normally.
More modern, innovative blue-light blocking glasses use nearly clear lenses that can block the blue light without causing any noticeable color distortion. The lenses may have a very slight tint of yellow when closely inspected; however, when looking at most things the colors seem very natural without distortion.
Comfort and Style
To be effective in protecting the eyes, blue-light blocking glasses need to be very comfortable and stylish. We want the blue light blocking glasses that you get from Goggles N More to become your favorite pair so that you would not go outside without putting them on. We have many styles to choose from that look terrific. Some frames are so lightweight, you will not even notice that you are wearing them. Others are made in the form of ski goggles to be able to withstand extreme sports action.
If you normally wear corrective lenses, then Goggles N More will make your blue-light blocking glasses to match the prescription from your eye doctor. Prescription goggles are also available for a variety of sports.
The intense exposure to excessive HEV blue-light comes from the modern lifestyle. The vast majority of people, especially younger ones, have too much exposure to damaging HEV blue light. A mere two hours of exposure from staring at a screen or being outside in bright light is enough to cause eye strain.
Getting a professionally-prepared set of blue-light blocking glasses and goggles, which incorporate your corrective prescription, is an important way to protect your valuable eyes.