Let’s talk about exactly how blue light glasses work. When you go to the beach, you put on sunscreen. Why? Because if you don’t you’ll get sunburn. And if you get a sunburn often enough, UV radiation may cause skin cancer.
Just like your skin, the cells in your eyes can be damaged by UV as well. Fortunately, your eyes have evolved to naturally block much of the UV light they’re exposed to. Sunglasses block what’s left when you’re outside.
Ultraviolet light isn’t the only type of light that damages your eyes though. The wavelengths that make up the visible portion of the electromagnetic spectrum get through your eye’s natural protection and reach the retina. You know, so you can see things. Scientists have discovered that the highest energy wavelengths of visible light can cause similar damage to your eye as UV light.
The highest energy visible light, is blue light.
What Are Blue Light Glasses?
Just like sunscreen and sunglasses, blue light glasses are specially designed to protect your eyes from the harmful affects of blue light. They have a few unique features that allow them to do this particularly well in an indoor setting. But how do blue light glasses really work though?
How Blue Light Glasses Work
Just as a cheapy pair of sunglasses are less effective than a good pair of polarized sunnies, not all blue light glasses are created equally. Different brands use different coatings and materials that effect price, effectiveness, and general comfortability. Features that determine the effectiveness of blue light glasses are:
- How much blue light is blocked
- Anti-reflective coating
- Lens material
- Warranty options