Sunlight is made up of red, orange, yellow, green, blue, indigo and violet light. When combined, it becomes the white light we see. Each of these has a different energy and wavelength. Rays on the red end have longer wavelengths and less energy. On the other end, blue rays have shorter wavelengths and more energy. Light that looks white can have a large blue component, which can expose the eye to a higher amount of wavelength from the blue end of the spectrum.
- Blue light exposure you receive from screens is small compared to the amount of exposure from the sun.
- Sunlight is made up of red, orange, yellow, green, blue, indigo and violet light. When combined, it becomes the white light we see.
- t regulates circadian rhythm – the body’s natural wake and sleep cycle. Exposure to blue light during daytime hours helps maintain a healthful circadian rhythm.
“Excessive blue light has been linked to macular degeneration, glaucoma, and other age-related eye diseases. The formation of cataracts may be the body’s attempt to shield the retina from blue light.”