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>On a note related to eye strain, but unrelated to blue light: the best solution I've found for eye strain is to wear reading glasses (or if you are near-sighted, glasses with an additional diopter or two) even if you don't need them. With the correct SPH value, the screen will be at optical infinity and your eyes will be fully relaxed.

This is interesting. I'm reminded of the oft repeated recommendation to "look away from your screen at something far away" every 15 mins. I wonder if you could just switch glasses to a prescription that make your eyes believe they are focusing on something at a distance. How would you figure out the right prescription for this use case?