JTL Interesting read. I think an important part of that is the aversion towards the offending light source described. I wrote about this in another post, and many people here have that same instant aversion towards offending screens. That response can be considered a pre-seizure activity as the brain is now aware that those sources have negative effects, the same way people instantly avoid certain foods after becoming sick because of them.
What people with bad symptoms of LED strain often describe are similar or almost exactly like pre-seizure symptoms. Face twitching or muscle twitches, brain fog, anxiety or depression, sudden drop in energy, etc.
You'll also notice a lot of people say they felt "off" after spending time with an offending screen and it can take a day or two recover.
Just to be clear, having these issues does not mean you will have a physical seizure so I don't want to alarm anyone. In fact, you will probably never have an issue with this in any other aspect of your life and you do not have what is considered "traditional" epilepsy. But these screens seem to cause a similar reaction, although at a lower intensity of symptoms, it is still a similar mechanism. But because they never reach the level of a full seizure, nobody ever goes to see a doctor.
Also, just to add this probably does not describe everybody with eye strain. I'm sure a segment of the people here may just have untreated eye problems. However, if you have the more severe symptoms and your eyes have been fully tested, it is probably an issue similar to photo sensitive epilepsy.
--Thanks for posting the article.