I had it done around 20 years ago, I was -6.5 and -6, both with a lot of astig. Although my accuracy without glasses improved a lot, my accuity declined. I to this day have halos around anything that has contrast, for exampe white subtitles on a black background looks like semi-double vision in the vertical field. I also lost a lot of contrast, for example looking in a sock drawer in mid light it's difficult to see socks of different shades. Looking at the night sky can be a mess. My eyesight with glasses after surgery has never been as good as my eyesight with glasses before surgery. I think the surgeon messed up the corneal/pupil diameter thing, at the opticians, when he shines his penlight into my eye, I can see the test board a lot better. Suggests to me that the accuity issue is lessened when my pupils are smaller.
Anyhow, prior to the surgery, my glasses went on before I got out of bed, and were taken off last thing as I got into bed. I could not operate even a short distance without them. Showering, I really couldn't see my lower "bits". After surgery I was able to play some indoor football without glasses for the first time.
After some years my sight has worsend a little, so I'm now -1.5 and -1, no astig on one eye, a little in the other. It's not good enough for driving standard. On the plus side, as I approach 61yrs, I do not need reading glasses. Although I do need to take my glasses off to reading, whereas maybe 8-10 years ago I could read with them on.
So for me, the operation was quite a disapointment, it took a long time for my brain to mostly compensate/ignore the halos, but they are still there. However overall, the operation did improve my day to day life significantly.