This is a brief article about the evolution of the human eye. It first appeared as a Vic Skeptics discussion pamphlet.
The full range of our discussion pamphlets can be downloaded here: http://www.skeptics.com.au/resources/educational/
Note that the diagrams in this article can be saved in high res by clicking on the diagram.
It is often claimed that the eye is such a wonderfully purposeful organ that evolution (i.e. random chance) can not possibly explain it; it must have been designed. In support of this position, Charles Darwin himself often gets half-quoted.