The OP is inconsistent, talks about auto focus, adjustable glasses and variable focus glasses.
Can't see how glasses can ever "auto focus".
Glasses have been adjustable since day one, used to pivot over the nose to adjust to face width. Took many of mine to have legs adjusted.
The first variable focus glasses only had 2 focal lengths, quite grim. Progressive focal length was a major improvement, I got my first pair in early 70s and combined with photochromatic the best thing since sliced bread.
Varifocal is not something I would contemplate for surgery, had too many duff glasses to take the risk.