Smartphones Ruin More Than Your Sleep -- They May Also Be Destroying Your Vision

If you are buying a new iPhone, don't use it in bed -- and not just because nighttime smartphone use messes up your sleep cycle. The blue light from personal electronic devices has also been linked to serious physical and mental health problems. Blue light is part of the full light spectrum, which means we're exposed to it by the sun every day. However, nighttime exposure to that light, which is emitted at high levels by smartphones, tablets, laptops, and other LED screens, may be damaging your ...