- Blue-light blocking glasses have filters in their lenses that block or absorb blue light, and in some cases UV light, from getting through. That means if you use these glasses when looking at a screen, especially after dark, they can help reduce exposure to blue light waves that can keep you awake.
- Many blue-light blocking glasses you can buy also claim to help reduce eye strain.
- Most are meant to be worn during the day while working in front of a computer, and at night to prevent the blue light from screens from keeping us awake
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