A new study suggests that blue light such as from phone screens may not be as disruptive to sleep as previously thought. The study looked at how people reacted to different types of light. They found ...

If you remember your prism experiment from grade-school science, light is made up of several visible colors. One of these colors is blue light. It has the shortest wavelength and produces the highest ...

Blue light is a high-energy part of visible light from the sun, screens, and light-emitting diode (LED) bulbs. Your cornea and lens don’t block blue light the way they block ultraviolet (UV) rays.

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