The procedure comes with lifetime warranty so there's no reason to go back to glasses afterwards you will just go in for a touch up.
Has your friend gotten the procedure done themselves? If not, then I wouldn't listen to what they say. I know people that have had Lasik done over 10 years ago and are still glasses free. As you age, you might have to go back for readjustments, similar to the number on your lenses changing.
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