No, it's not a problem. They don't care what the numbers say as long as you can pass the vision test, which isn't any different from the other classes... I don't think. All you need to pass is "correctable" to 20/20 so worst case scenario would be to get glasses, which I wouldn't figure would be necessary. I just had my eyes checked and I was 20/25 in my left eye and I can pass the medical no problem. It helps if you walk past the chart first for a little cram session.