Changhuei Yang At Cal Tech has devised a no lens microscope. I do not understand
exactly how it works but this is the jest of it. Just as your eye registers the
"floaters" when bright light shines on the debris, this "optofluidic microscope"
casts a shadow of the object directly on to an array of light sensors. The
object is in a microfluidic channel. Anyway all of the info goes to a computer
which constructs the image. Cost $10 if mass produced. Sign me up!

Article in this weeks Nature. 4 June 2009
Or at http://www.merid.org/NDN/more.php?id=1957