I do not, and they seem like snake oil to me.
In my experience all issues I've known people have with eyestrain have been caused by having the brightness level too high for prolonged use.
I'm looking at a monitor for maybe 14 hours a day and don't get eyestrain - I always calibrate my monitor to 120 cd/m² brightness level, on my current one that's brightness at 32%, my previous one that was only 19%
Both a friend of mine and a relative had issues with eyestrain which went away once I persuaded them to seriously reduce the brightness level they keep their monitors at.
Yes, it doesn't look as good when the brightness is lower - high brightness just looks better, better contrast, more vibrant etc... but it also wrecks your eyes. Imagine staring at a lightbulb, constantly, for many hours every day - that's what people are doing when using a monitor at the kind of 300+ cd/m² brightness levels they often come out of the box at.