Try this link. http://www.usna.edu/Catalog/2005-2006organization.pdf
Check Page 8 for the vision information. It doesn't give much information but it specifically says any type of corrective surgery is an automatic disqualifier.
Thanks for the link. I am still getting some confused responses (not on the Free Republic) about what kind of waiver is available and under what circumstances.
I have heard the DoD medical exam is an involved affair.