Just to be clear, "visual processing" being screwed up doesn't have to mean a vision impairment; The combination of dark background with bright moving dots can make certain people motion sick, especially when combined with static objects in the foreground that you need to focus on. The fun part is that these types of processing quirks usually do stick around for a bit and fade over time.

I guess I'd kind of compare sensitizing stimulus and subsequent removal to saturation in a solution where metered dilution was the only way to bring the saturation down to normal.