I got glasses at 14 because of an astigmatism they said, drivers ed test. Left eye only, right was 20/20. Wore them, later switched to contact. No improvement. It's called amblyopia, no lazy eye yet. Cheated my first license renewal by sliding my head and still pushing down the button. Just got renewed, honest with the guy, and showed me other slides. I guess one really good eye is good enough.