I get the static and grainy vision all the time, kind of covers your whole spectrum of vision, usually when you close your eyes you can see blobs of colors floating around sometimes? who knows everyones is different it seems...
I remember being really high once though and seeing the fractals of light coming off a really bright light whilst in the night with colors shining out of them, was kind of cool and nice to look at. (Not directly at it, that'd burn a spot in my eye and I hate that, but off the side of my vision...)
The sun has this effect but you can't really stare up in that direction for too long or..well.. try it and find out!
really the static and blobs get pronounced at night and high noon... I kind of got used to it, and learning about HPPD helped me get over it, its not like it will handicap you... if anything i think its a great thing being able to visually 'see' peoples auras, etc... but I wish i had this ability.. though I've known a few people (Psychedelic and non-psychedelic users) who have had this ability...
Some people see the non-psychedelic users who have these abilities as kind of a next step in evolution... see indigo children and crystal people or whatnot... some of it is interesting, other sites are just plain ridiculous
I think its an after effect from the use of the psychedelics that happened in the 60's and a alteration within the brain chemistry of future generations... but theres no scientific evidence to provide backing for this, just a random thought I had... (NOT SAYING LSD DAMAGES CHROMOSOMES, I have a copy of this article and it is hilarious hahahaha)
But just like if a mother who is pregnant, has a habit of eating certain foods, the child in turn would probably be similar, i've heard this many a time... same goes for people who smoke marijuana, do cocaine, heroin, anything... the liklihood of addiction is probably higher because it goes into the child as it is developing... so who knows what mind expanding drugs may do to the mind of an embryoo...