They are known as "floaters" or "benign floaters" or "vitreous floaters": A blurry spot that seems to drift in front of the eyes but does not block vision. The blur is the result of debris from the vitreous of the eye casting a shadow on the retina. We call them "Squiggly Lines"! More info below.
Date: 06 Sep 2007
Time: 10:51:44 -0600
See also this: http://www.squiggly-lines.com/squiggly_lines/0000000a.htm It is about a more serious detachment that causes the same sort of squiggily lines.