Thread: Eye, lense, and opsins

Why do creationists think you need a lense for an eye? Wouldn't opsins be able to function on their own?

Also what exactly is the lense used for? Protection? Later on in evolution, focusing?

Originally Posted by Golkarian

Why do creationists think you need a lense for an eye? Wouldn't opsins be able to function on their own?

Also what exactly is the lense used for? Protection? Later on in evolution, focusing?

You don't need a lens to see, you need it to help you focus.


Dave Attenborough:

"Some very simple animals have nothing more than light-sensitive spots that enable them to tell the difference between light and dark....Flatworms have a small pit containing light-sensitive spots...."

I'm not certain exactly when the lens developed because eyes are obviously not preserved in fossils...maybe the eye socket and other structures can give us an inkling as to what kind of visual system ancient fossils had...does anyone know of any research being done in this area?