Glasses, in my opinion are always a hindrance to a pool player's true vision. If you check out some of the eye training programs on the web, you'll see that if your vision isn't too far off 20-20, it can be corrected with eye training.
In my case, my parents bought me glasses when I was eight, and my eyes got continually worse from that point on.
I'm 56 and tried eye training 3 years ago and bettered my vision from 20/200 to 20/70 in one eye, and 20/120 to 20/40 in the other. I had such a bad astigmatism though that even with improved vision I was seeing through a fog.
So I had laser surgery 3 years ago and it has been very good.
If I had only a slight correction, though I would do eye training.
One more thing, How many successful pros have you noticed that wear glasses? Karen Corr would be one, but that's about it. Pool requires extremely clear vision because of the intriquacies of the game.
Just my 2 cents.
Danny