Dyne. If you or anyone else is seriously getting seizures from the game I recommend a few things:

-Play in a well lit room.
-Make the window size half of your screen size.
-Don't play for over 3 hours at a time, and take short breaks to rest your eyes during game sessions.
-Lower the contrast settings either on your monitor or through your video card.
-CALL A DOCTOR AND QUIT THE GAME IMMEDIATELY. Seizures are dangerous yo. They can damage your brain.

But in all seriousness, this is probably one of the lease flashy Final Fantasy, wait, no scratch that. One of the least flashy JRPG games out there. I wouldn't be too worried about seizures from this of all games.