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Why does my newest character see weird purple and gold lights in first person mode?

These lights come from the top and bottom of the screen and move towards the middle. They're only visible with first person camera and only on this character. It's a redguard templar with some sai sahan style things on, if that matters. I have no buffs whatsoever on what might do this.
Is this a bug or some weird feature that I don't understand?
It reminds me of migraine attacks I had years ago and I'm fearing looking at stuff like this too often might trigger them again.