Wolfsoul, my 3 oldest stepdaughters all had the same problem - their eyes got very bad very quickly. I hope you'll be reassured to know that, for the 2 oldest, it slowed down a LOT when they reached their early 20s. The 3rd one still hasn't reached that age yet.

I guess that's how it usually goes - they get a lot worse in the late teens and then slows down or stops in the early 20s. So you probably won't go blind after all!