When I got LASIK I wasn’t allowed to wear contacts for a few weeks before the surgery. I bought the cheapest pair of glasses from Zenni. I had new glasses for $17 + $10 shipping.
If I had to do it again I would have my IPD measured by a proper optometrist first. I just guessed at it and got ones a little too small, so they had a kind of fisheye effect.
Still, for <$30 it was a great bargain