What is Blue Light? old
"Nearly 70% of Americans experience digital eye strain due to prolonged use of electronic devices."
- The Vision Council
If you’re like us, you spend several hours a day in front of a digital screen. The problem is that our eyes are not designed to be constantly exposed to the harsh blue light emitted by computer screens, phones, and television. Exposure to blue light causes eye fatigue, dry eyes, blurred vision, headaches - symptoms of digital eyestrain also known as Computer Vision Syndrome. Beyond damaging the eyes, exposure to blue light at night disrupts the circadian rhythm that regulates the release of melatonin, preventing us from falling asleep and degrading sleep quality.
Blue light also known as high-energy visible blue light (HEV) has high frequency and short wavelengths similar to UV light. Prolong exposures to artificial blue light has shown to damage the retina, the part of the eye that keeps objects in focus. Because your eyes are working extra hard to cope with the blue light, you begin to experience eyestrain. Over sustained periods, the exposure can contribute to long-term vision issues such as cataracts and age-related macular degeneration (AMD).
At night, artificial light disrupts our circadian rhythm, the natural release of hormones (melatonin). The blue light tricks our brain into believing that it is day-time, which makes falling asleep more difficult and lowers our sleep quality. Circadian disruption produces serious downstream effects including increase in obesity and depression.
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