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Quite aside from the astronomical aspect.
As someone who got glasses for astigmatism at around age 30 (And subsequently went through laser correction some years later and have had nine years glasses free again now, though I forsee reading glasses in my future in the next few years)
Take it very easy when you drive until you get used to the glasses, I gave myself a bit of a fright soon after I got mine as they distort your vision (Undistort really) and in my case it messed with my depth perception a bit. I found myself having a nasty moment driving over a bridge with a corner in it at 100KMH (It was easily a 100KMH bridge) but the distortion of depth perception made it feel like the corner loomed at me very suddenly.
It only took about a week to get used to them and then it became a non issue but it is something to be aware of. I also felt a little like everything was leaning toward me until I got used to the glasses!
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