Though my next question would be... why does there need to be a certain amount of space between the lens and the retina? Why did the vitreous mass evolve into a lens specifically in the front of the eye, with the rest of the vitreous mass acting as this space between the lens and the retina?
Evolution is a Fact #40 - What Use is Half an Eye?
Thanks for posting this one in particular. Evolution is still something that I know little about, and honestly I don't care to be an expert in, but this was easy to understand and made total sense vs. the creationism I was indoctrinated with. This is a simple, yet powerful refutation of an argument agsinst evolution.