I was told when I was 15 that i needed glasses. I wore them a month then off and on till now. I just turned 25 (hadnt wore them in over 2 years) and had to renew my DL. I passed the test. So i guess Im ok. The glasses did make a diff when I wore them But i can see ok without them. Plus I think if your borderline like me and you wear them your eyes tend to get dependant on them and your vision gets worse faster.