Through the Eyeglass Blog
Get the latest trends, tips, and news in our "everything eye" blog.
Have you heard about blue light in the news recently? Blue light is light in the visible spectrum with a wavelength of around 400-490 nanometers, which is sometimes referred to as high-energy visible light (HEV). It’s a naturally occurring part of sunlight and essential to the regulation of circadian rhythms – the body’s natural wakefulness and sleep cycles.