PC screens emit blue light.
Windows 10 includes a Night Light feature that is designed to reduce eye strain by decreasing the blue light emitted by your monitors.

In recent years, evidence has appeared that the exposure to blue light causes eye fatigue and a whole range of health issues. 

It is what keeps you from sleeping, and it is what hurts your eyes.

To schedule night light so it turns on automatically:


-Select Start > Settings > System > Display > Night light settings-

-If your night light toggle above the link is greyed out, you may need to update your display driver-

-To do this, click Update drivers in Windows 10-       

         

                       -Under Schedule, toggle Schedule night light to On-


 -Select Sunset to sunrise to automatically change depending on light conditions-



(Left) night light off (Right) night light on





-Or select Set hours and enter custom times for the night light to turn on and off-            

               



-If you're consistently working later shifts or in a dimly lit environment is it recommended to use Night Light to help protect your eyes-