Sorry bro but that is not true at all
The lasik flap NEVER heals completely... the perimimeter does heal and scar nicely, but the rest of the flap will never heal (you would go blind if it did!) it is held in place by capilary suction and of course the scaring of the perimiter.
So eye integrity is forever compromised. Now to be fair, most blows to your eyes that would be hard enough to detach the flap would probably blind you anyways... most.
I am part of that famous 1% failed or complications statistic...
I am a victim of a greedy lasik doctor... I was not a good candidate but he went ahead and did me anyways... I spent years of nightmarish pain and discomfort after my operation so trust me, I did a LOT of research and hit all the support groups (
http://www.surgicaleyes.org/ helped me a lot post surgery). I know a thing or two about failed operations.
To this day I have chronic dry eyes, poor vision at dusk or on cloudy days and low contrast vision and halos around lights at night (and those are nothing compared to what I went thru post-op...)
By the way, remember that 20/20 vision ONLY means you can read 2/3's of the 20/20 line...
nothing more. If you have double vision out of one eye and see the 20/20 line twice or ghosted you're still considered a SUCCESS.
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Both of those images are 20/20 vision and considered a success... the image on the right is close to how I saw out of my left eye post op... my right one was a bit better and I was constantly in pain and had atrociously dry eyes.
Not trying to discourage anyone out of lasik, in the long run and with a lot of help I am now "ok", but never EVER dismiss the risk with the bull$hit 99% success rate statistics... First of all they are not true, and even if they were, 1% failure out of millions of procedures a year is still a very high number.
Do your homework, research a lot, choose the best doctor, get a second opinion and make an informed decision... you only have 2 eye, and "worse case scenario" is not "oh well, I may still need glasses"... it's far far far worse.