You clearly have nil knowledge of evolution. I'm gonna say what unreality said and defer you to either dawh, ADParker, or octopuppy here. Unfortunately my high school level biology is sort of lacking.
I don't know anyting about the brain or liver, but I do know a thing or two about the eye. Thank you, Mr. Victor Stenger. I learned the following from one of his books, and have paraphrased, taking information from the book, which I have in front of me.
You say the eye is perfect and wired exceptionally, and "Gmoz, it's so good God must have done it." Welll. You're wrong (not surprsing). The eye is actually wired backwards, in all veretebrates. Other animals have their eyes wired much more rationally. Intelligent design? Methinks not. Yeah, it works fine for us, but it's.. not designed at all. "Eyes provide such obvious survival value that they developed at least FORTY times independently in the course of evolution. Neuroscience has identified eight different optical solutions for collecting and focusing light, although all share similarities at the molecular level. The physics and the chemistry are the same; few ways exist for detecting photons. But, because of the important role of chance and local environment in the evolution of complex systems, different solutions to the problem were uncovered by random sampling of the varied paths allowed by evolution. In short, the structres of eyes look as they might be expected to lok if they developed from purely material and mindless process - chance + natural selection - as these processes explore the sace of possibe survival solutions."
Also, if our eyes are so perfectly "designed", why do people go blind? Why do people need glasses? Just God failing, or.. imperfect evolution. The answer is clear. Same thing with death people and the need for hearing aids.
(Sorry for any typos, this computer doesn't have spell check. I didn't feel like typing this up on my MacBook, and I was looking at the book rather than the screen whilst typing.)