If You Were an Engineer Charged with Designing Vertebrate Eyes

If you were an engineer charged with designing vertebrate eyes, would you make them just like they are, or could they be better? Why or why not?

A) Vertebrate eyes are very good, so I would make them just like they are.
B) Vertebrate eyes are pretty good but they are set up such that they have a blind spot. I'd make them better.
C) Nothing else has a better eye than a vertebrate so they are perfect as is and that's how I'd make them.
D) Vertebrate eyes mostly don't see well so I'd make them better.
E) There's no way to know whether vertebrate eyes have any structural problems so this can't be answered.