and as for the phenomena.. you cast a complicated spell on someone which in order to do, that is if they are actually runes, flawlessly, you needed to memorize .. and you're looking at the mental image that you created when memorizing .. repetitive mental images tend to reinforce and thus persist when great application is applied. So, I suggest you relax and let the images reform in your conscious memory that is, with your permission, then when you can see all the runes, write them down on paper and then burn them. The mental images should disappear from your vision.
Otherwise, you're looking at too much electronic media.