There are a lot of different types of vision issues, it isn't just down to what can be corrected via glasses. Some of it is (mis)wired into your brain and there isn't much you can do about it.
I have good enough vision (with my contacts) that from the tee I can see players hit approaches on a long par 4 and tell where they end up on the green, and even see whether they make their putts or not if I've got a good angle (i.e., up on a hill)
But I have always had a problem tracking objects moving quickly up and down. I can see side to side fine, but I lose track of falling objects quickly. So even when I hit a full SW I can watch it to its peak, but quickly lose it as starts to descend. So I always watch my shots to their apex and then look to where I expect them to land (and if I'm wrong, like a drive on an unfamilar par 4 where there is no candy striped 150 marker to give me some point of reference, I may be in trouble!)
I used to kick ass in baseball, I could hit great. Until people figured out that pitching me a softball style pitch was harder for me to hit than a fastball