What hallucinogen had you taken before, and are you taking any medication/drugs right now?

I experience all of these 'symptoms' mildly, save for the colored trail behind moving things that only happened with an antidepressant. (I had also had a hallucinogenic experience on buspar, another story) Having these experiences mildly is pretty normal, or at least completely benign. Staring at people and seeing auras or staring at objects, lights or pictures for a duration of time before moving your eyes and experiencing some sort of imprint is common. In a dark room, or when we close our eyes, for many of us our brains start to hallucinate flashes of colors and even shapes. As for the static, I don't hear about it much but I also see it and I'm sure it's just as natural.

Unless these are significantly impairing your vision, I wouldn't worry about it or say that you are mentally ill. What goes on in your brain that you are unaware of is incredible, and sometimes it just kind of 'leaks out' in our vision.