Intelligent Design just a question for evolutionists

I still think that the best argument against inteligent design, is the stupid designs we find in nature, stuff that a child would design better, Like nerves and blood vessels run trough the inside of the eye blocking light from reaching the sensors at the back of the eye, and a blind spot because of the same idiotic idea.Its equivalent of placing the lens of a camera behind the wires and chips, and then writing a computer progam to fill in the missing pieces of the picture.

make 2 dots on a piece of a paper then look at one and move the distence of the paper from your ees untill the dot vanishes and it looks like the paper is blank, then tell me we dont have problems whit our vision because of this idiotic design.