Linux Mint the simplest eye protection app?

Question

mint

The simplest application you need to protect your eyes. I need to be able to turn the protection on and off myself. Binding by location is not needed, as well as automatic adjustment by time, etc.
(ps or monitor color mode)

Answer 1

The simplest application for eye protection is to attach a well-lit sheet of a glossy magazine to the monitor and adjust the brightness and contrast of the screen as close as possible to this very sheet.
At first it will seem that the world has faded and the colors have faded. Then the bloody tears will stop from how those monitors are set up for sale.

Answer 2

it's obvious = just turn off the monitor))

Answer 3

redshift