Several years ago, I bought a few pair of glasses online, all good experiences. I followed the info from the script, filled the info in to the specifications of what where was asked on the site. The glasses were as good as the ones I'd paid $200+ for only these I paid less than $20 each time. Today the same glasses would run me closer to the $200. And I did have stigmatism and such other information I had to add in.
I don't remember all the specifics, but, I still have most of the glasses and last time I went to the eye doc, I didn't need to change anything, so, I'm still using the same glasses when I need them which is only for distance of which I rarely have use really. I should use them for TV sometimes, but, bigger screen and sitting a little closer solved some issues, plus I no.

Plus I no longer drive which was the real purpose I needed glasses in the first place. Anyhoo, buying glasses online can be a real money savior.
Oh and the first time I bought the glasses, I had a coupon code from "Steals and Deals" off a news program NBC or ABC I forget which. Still, good bargains to be had.