I am a teenager and I still have perfect 20/20 vision. Now, I'm not expecting this to last, so I have a question.
How do you know when you need glasses? Do you just wake up one day, and your vision is blurry?
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Edited by jutsu: 1/18/2013 3:35:14 AMOver time your eye sight starts to get worse. Doing things that are bad for your eyes will speed it up.