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.

Blue light gets a bad rap. It’s often cited as a leading cause of eye fatigue. As smartphone enthusiasts that spend plenty of time on our screens, such stories might make us rethink how much time we ...

All the screens we look at every day emit a large quantity of blue light. That's fine for daytime use, but it can disrupt your sleep at night. That's because blue light stimulates your brain and fools ...