Many people use their electronic devices, including phones, tablets, and computers, for extended periods. Companies now sell screen protectors that reportedly block blue light and benefit eye health.

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You’ve likely heard that blue light from smartphone screens may be keeping you awake at night. While the sun is our main source of blue light, the rise of LEDs and screen use exposes us to artificial ...

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Blue light -- the kind from your smartphone, tablet, TV, and even energy-efficient light bulbs -- is not necessarily damaging to the eyes but can trigger eyestrain and lead to a range of health issues ...