About 2 years ago I discovered that if I were to look at the nothingness,(not looking directly at anything) or what I call air, I see little particles floating around everywhere. And another thing that I would say is strange is when I was in elementry school I could look at the floor in the bathroom, (the kind with all the little tiles) and see horizontal and vertical lines everywhere. Even as an adult I can see the lines on the floor, but mostly in bathrooms. By the way I have 20/20 vision. Is this just weird or has any one expience either one of these?
http://en.wikipedia.org/wiki/Image:Floaters.png
They are mostly caused by either the shrinkage of the vitreous humour (mostly due to aging) or a knock to the head. If you look up at the sky on a claer day, you will most likely see some.
Read the wikipedia page on floaters for more information:
http://en.wikipedia.org/wiki/Floater.
Thanks.