Problem is that the above is not just due to a single mutation, it is a system. The makeup of the eye would be useless without the enzymes to clear it up. It all has to work together. In addition, need creates nothing at all without intelligence behind it.
What is the "intelligence" in planets creating perfect spheres? It's the need of things to go downhill; when everything is as downhill as it can be, it's a sphere. What is the "intelligence" in turning moths dark brown when pollution goes up, and turning them white when it goes down? Nothing, unless birds eating only the bugs they can see constitutes "intelligence." The need is merely that the birds don't want to starve, and eat moths, which they locate by sight.