First, just wanted to say, lie is spelled lie, not lye, in this instance. Lye is sodium hydroxide commonly used in creating soap and other slightly more toxic compounds.
I'd think that lying (yes, that is the correct spelling for the transitive verb) to the Navy, for whatever reason, shows extremely poor judgement, and frankly, goes against the moral convictions the military service is looking for.
NOT to mention, if, for whatever reason, they DID find out, and you were already in, you could easily be looking at a court of inquiry, if not a full-blown court-marshall. Can you say Fort Leavenworth?
Lying on a government document (and yes, knowing and willfull omission of the truth is just as bad as saying you never had surgery) constitutes perjury, falsification of government documents, conduct unbecoming of an officer, and possibly more. Why bother lying?
Sure sure, PRK and the other laser stuff might be a little more "acceptable" (and less noticable) than, say, an amputation of one's arm. Still though, falisfying your medical history is NOT something you should do, if not only by moral character, than maybe the fact that your background checks and frequent physicals may, MAY, put you into a world of hurt.
Just do the paperwork.
~Nate