I had the same issue with sports glasses. In the shops you’ll struggle to find anyone who will do them beyond -5.
Then you have to argue with the on the street opticians so they’ll give you your dispensing details. It’s ridiculous. Yes, I’m Mr Magoo, you’re supposed to be helping people like me. Screw the guys you see who have -2. Boo Hoo, things are a bit blurred for you. Without glasses I can’t recognise my own family unless they’re within 6 inches of me. Is it too much to ask to be able to get decent riding glasses even if I’ve committed the terrible offence of having funny shaped eyeballs?
That’s whay I have to shop online.
/wipes spittle from screen