It seems to me that the majority of people who cause accidents can pass an eye test.
So i think the fail lies elsewhere.
The fail is heavily present in your post.
"If it doesn't fix the problem entirely, then obviously it shouldn't be required."
Accidents involve many variables, and saying that vision tests shouldn't be required merely because "most accidents are caused by people that can pass the eye test" is just plain idiotic.
To think that at least relatively clear vision isn't necessary for driving is very short sighted.
