Photo: Poster detail from Mimi_K at flickr.com
Charles Darwin worried that the human eye cast doubt on the entire theory of evolution. He felt it was the one structure of the human body that was so subtle and so complex that it was difficult to believe it could possibly have evolved. These were his words: “To suppose that the eye with all its inimitable contrivances for adjusting the focus to different distances, for admitting different amounts of light, and for the correction of spherical and chromatic aberration, could have been formed by natural selection, seems, I freely confess, absurd in the highest degree.”
Explore the sites below to appreciate the sheer intricacy of this remarkable organ:
Click on these options: Flight into the Retina and The Lens.