Blue light is a part of the light spectrum operating between 400-500 nanometers (nm). Blue light is emitted from all artificial light sources including computer screens, TV screens, cell phones, tablets and light bulbs. Although referred to as 'blue light', it may not always appear visibly blue.
Blue light has a very short wavelength, and so produces a higher amount of energy.
Recent scientific studies have shown exposure to the blue light spectrum may cause serious long-term damage to your eyes and suppress the production of melatonin.
Because the human eye is not very good at blocking blue light, it is able to penetrate all the way to the retina (the inner lining of the back of the eye). Laboratory studies have shown that too much exposure to blue light can damage light-sensitive cells in the retina. This causes changes that resemble those of macular degeneration, which can lead to permanent vision loss.
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