https://justgetflux.com/Flux is a pretty great tool that I have begun using that causes your computer screen to dim and change color in the night and shine brighter during the day. As someone who habitually stays up pretty late this is a bit annoying because it makes you feel tired a lot faster (which is probably healthy). However after a few weeks of using it, you can really tell how much eye strain you had before. Going back to default color, I feel like I am always squinting and stressing my eyes, rather than relaxing them.
At first when you turn it on, you will either:
1. Not see much of a difference (day)
2. Notice your screen turn dark orange and hate it for however long it takes for you to adjust (night)
Further in the settings you can customize how strong it is (and the orange/blue tint) and even include your ZIP Code so that it can know exactly what it looks like outside for you. It is helpful if you want to keep a good sleep scedule or want to fall asleep faster. Strong computer light can adjust your brain to the light, according to multiple studies.
I'm sure it's partially placebo--but you really feel a difference afterward. It only takes a few seconds to install and even has an option to disable it so after a few minutes you can see the difference. Try it.