Bob Eager wrote
whisky-dave wrote

They don't give you the prescription, maybe you have to
insist or ask for it but most don't hand you a prescription
that goes to the assistant in order to make your specs.

They are obliged to give you the prescription if requested.
However, I believe that doesn't include the pupillary distance
(PD). Doesn't bother me so much as I only have one!

Its trivial to measure and only has to be done once.