US scripts usually don't include the ocular measurements. I've had a pair where they got the vertical ever so slightly wrong on a progressive, truly horrible, I went back to the eye doc about it and it confounded him also--I could look through the script on his machine and it was fine. He finally figured out what had happened, dialed something into his machine and it was just as awful as the glasses. The optician recut the offending lens, no problem at all. I have no idea how you are even supposed to measure that at home, the opticians always seem to do it on the frame you're actually going to be using. It's not fixed like PD is. (If you're not doing progressive it doesn't have to be spot on, though.)