That's what I did, although my recommendation would be for people to do it as early as possible. Whenever your eyes stop changing, figure out how to pay for it. A lot of reputable places run good specials from time to time.
My challenge is I got mine basically right before or right as my age related farsightedness started to come in. But on the whole, I'm very happy with it.
People told me that but most places won't take you before you're 20 (but it changes, I remember I had to wait 2 years after my last prescription change but was told just 6 months after I had waited those 2 years ofc)