I am not the expert you are replying to, and I have only anecdotal evidence. But for what it is worth, I have been using "computer glasses", which are midway b

I am not the expert you are replying to, and I have only anecdotal evidence. But for what it is worth, I have been using "computer glasses", which are midway between my reading- and distance vision prescriptions, for more than 10 years. I find that this prescription reduces eyestrain very significantly, and I can easily spend a whole day in front of the screen without fatigue.