The Night light simply makes the color of the screen warmer. Earlier, external screen filters were popular. The users would attach a blue screen filtering film to the screen of their computer.

The screen is automatically washed with ... On a Mac, it's called Night Shift, and on a Windows computer, it's called Night Light. In addition, there a handful of third-party apps you can download ...

Research compiled by the AOA indicates that prolonged exposure to blue light (such as sitting in front of a computer all day) ...