Has anyone else had this, or similar?

Last year I noticed whenever I played computer games (the sims, etc) for too long (maybe 2 hours or so) my brain and eyes would feel "sick". Like, almost motion sick and like my brain was scrambled.

I'd have to lie down and stare off into space for up to 2 hours before I felt normal again. Closing my eyes didn't help. Made it worse in fact.

Anyway, as time went on, it got more and more frequent and eventually if I even looked at the computer screen for a second i'd feel sick and have to look away.

One night I was playing the sims (which I love) and felt weird but just wanted to do one more thing, and then it actually ended up bringing on a horrid migraine aura.

I was then scared to look at a computer screen anymore. I got my eyes checked and I have astigmatism which is the eye ball itself is not a round shape as it should be, but a football shape, so light bounces off it in many places instead of one place.

So I have glasses now and am now able to play computer games for up to 3 hours before I start to lose my mind and feel "brain sick". But it still happens. I'm scared eventually I won't be able to work properly either because of this. Already I work part time because of it. I can't look at computer screens for longer than 5 hours without feeling like i'm going to collapse or have a fit of some sort, or throw up, or have a migraine episode, etc.

Also, my glasses I can't wear unless I am on the computer, as I can't walk around or see properly with them, as the ground looks wobbly and wavy and I have zero depth perception...So I can't even wear them at work.

Very weird and disturbing feeling. My partner suggested it might be epilepsy,but I don't know...Anyone have any knowledge of any of this?