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1
What is blue light?
Blue light has a very short wavelength, and so produces a higher amount of energy. Studies suggest that, over time, exposure to the blue end of the light spectrum could cause serious long-term damage to your eyes...
Reviews
5.0
1 rating
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They are great the help me so much I have not had a headache since I got them. If 10 stars were a option thats what they would get
