100% believe that this could be a symptom of some sort of mild epilepsy and have thought that for years. I've been suffering from this since 2008 after a head injury. I've had the same symptoms as everyone else: extreme brain fog and confusion, inability to focus, headaches, etc.
Interestingly I've built up a tolerance to all my devices by just using them every day for years. I do use f.lux on my laptop and a similar app on my phone, but my TV was unbearable for a few months and I gradually desensitized myself to it.
What really kills me and has drastically altered my life's course is fluorescent lighting. I can't be under them for longer than 10 minutes without these epileptic symptoms. I went to law school in the early 2010s and barely passed because all of my classrooms had fluorescent lighting. When I graduated I was terrified to realize that all of the courtrooms have them as well.
I've been fortunate to be able to control the lighting in my office and whenever something involves going to court I just send another attorney to cover for me. I also can't go into malls or box stores like Best Buy or Walmart or Target. It's a pain in the ass but I've managed and don't really think about it at this point. I would have loved to have been a courtroom litigator but it's not in the cards.
I hadn't checked up on this condition in a few years. Very saddened to see we haven't made much progress on it as far as treatments. But I'd bet if I went to Target for an hour and then went and got an EEG I'd absolutely test positive. Might have to schedule one. The question is... what then? Wish there was a less intense epilepsy medication that would help me out.