You may have heard recently about the effects of blue light on your overall health and about some of the products in the market designed to minimize or eliminate its effects. Although it is clear that exposure to blue light can adversely affect our vision and overall heath, few of us understand what exactly is blue light.
Blue light is the highest energy portion of the visible light spectrum. When put through a prism, visible light is broken down into its component colors, from red (lowest energy) to blue (highest energy). Each and every day we are exposed to all kinds of light, with increasing amounts of blue light in that mix. Outdoor exposure to blue light comes from the sun; while indoor exposure comes from artificial sources of blue light, such as computer screens, tablets, cell phones, television screens, and modern energy efficient light bulbs. This blue light affects us in 3 ways:
There are several ways to address and minimize the effects of exposure to blue light. Ideally, reducing the amount and duration of the exposure to blue light sources can help greatly to resolve all the issues related to its exposure. Unfortunately, our way of life, which is so dependent on modern technologies makes this approach a little impractical. Eyewear specifically designed to address blue light exposure can help to address blue light issues with such technologies as: