Well...
My dad had surgery for his and just in general he said everything was much clearer and brighter....before his surgery, he shot pool without glasses, but he didn't have great vision to do it, it was more that he could locate each ball and since he had been playing for 40 years or so, he could still shoot really well. Since the surgery, he has been able to shoot better because he could see the balls well and see the angles a little better. I don't know that that gives you any help whatsoever, but I thought I would add it!
John