[bcook]

I think "need" is a strong word. I have 20/70 (maybe worse) vision, but I am fully able to do most any normal task. I am even a better shot with a gun than most of my friends, with their contacts & lasic. Yes, everything is a blur, meaning I cannot recognize faces until ~30ft, but I can recognize if it is a person, a bear, or a car. Very few things are impacted by my poor vision.

I do occasionally wear contacts, so I am aware of the advantages of having better than 20/15 vision, I just usually do not require that level of clarity.