posted on Feb, 3 2007 @ 10:51 PM
Sure, I have seen similar things, but this is just how our eyes work - how they receive / use light. Dark streaks (tentacles) can appear but when you
move your eyes, these images "move" as well - making it appear as though they have gone back into the wall. It's actually in your eyes, not your
Visual optical illusions can be really mind blowing. In fact, there are several kinds of optical illusions that still can't be explained entirely.
(Researchers know how to produce the illusions, they just don't know exactly why they work.) I recently read 3 different books on the eyes and
optical illusions. You could probably find some books at your public library on this - or perhaps even on line.
No reason to be fearful. It's just how eyes work sometimes.