Night light is a switch in Windows that you can turn on and
off. When it is turned on, your screen shows warmer colors and the
amount of emitted blue light is reduced. Enabling night light reduces
the chances of developing eye fatigue or eye strain.
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Select the Network, Sound, and Battery icons (
) on the right side of the taskbar to open quick settings.
For more guidance on reducing eye fatigue or eye strain, go
to https://www.lenovo.com/us/en/compliance/visual-fatigue.