Blue Light Blocking Glasses: Science, Myths and Questions You Should Know
Blue light from digital devices and fluorescent lights has been shown to have negative effects on eyes, skin and circadian rhythms. However, it’s important to distinguish between misleading sensationalism and evidence-based science when making decisions about blue light exposure. Blue light between 440-495 nm is known as visible blue light or short-wavelength visible ight (SVV). It has the shortest wavelengths of any light in the visible spectrum, which makes its effect on humans quite pronounced. That also means that optical filters that block blue light are relatively easy to make. Frequent exposure to blue light at night is believed to be a risk factor for eye diseases such as cataracts and age-related macular degeneration (AMD) as well as increase one’s chances of developing glaucoma or optic neuritis. What does blue light do to our eyes? Excessive blue light exposure is believed to cause oxidative stress in the eyes and may be a risk factor for macular degeneration (AMD)