My eyes are at OD -6.25 D -1 CYL and OS -4.50 -0.75 CYL. I found that lack of 7-8 hours of sleep or higher close-up time in comparison to distance time results in mild soreness in my right eye. I am wearing my fourth differentials and second normalised. My last reduction was bifocal. I am trying to figure it out why just my right eye hurts. Is it because it is more myopic? Is it because it is dominant?
Get consistent amount of sleep. That will resolve the issue. (I had similar experience). So, sleep the same amount everyday and don’t disturb the sleep.
I had it too, in my right eye. It is from stress and overworking on PC. You must take a big break, or you will suffer big consequences.