I got new prescription glasses recently and they cause some eye strain.
The prescription is about the same as my old glasses, 12 years apart, perhaps they are dialed in just a little bit too much.
The other thing is that these glasses have blueguard filter, which I have been attributing the eye strain to. I've been looking for a way to remove the blue guard, but I can't and I don't want to spend A$400 on a new pair. :(