hi, just a question: my friend got LASIK 3 years ago but now he is seeing 20/60. his ophthalmologist told him that because he was READING too much, the muscles in his eyes "changed" a little bit. my friend was instructed to wear glasses until the muscles in his eyes "changed" back to their original position so he'd be able to see 20/20 again. what is going on here? is LASIK still not 100% effective?