Sunspark It's definitely not an allergy, the only thing I suffer from is dust allergies etc, never experienced allergies in eyes, I only started experiencing this after a binge session on a particular laptop, the binge session went on for days (overnight) without any long breaks and when I wasn't looking at the screen, it triggered when one day I was making a drawing, adding details etc.
I ceased drawing, when I experienced slight dizziness, like my eyes couldn't focus properly and after that experience I was confused when phone/pc screens were giving me severe irritated dry eyes...I think my eyes gave up at that point, because I was pushing them to the limit..It seems to me that i have strained my eyes so much that I developed dry eye and a chronic computer related eyestrain..I also have a mild astigmatism which makes you more prone to eyestrain..