By asking to talk to only those who have problems, you could be self selecting for a population who may not help you actually solve your problem, even if they mean well.
This is just my experience of course. When I did my initial research, I asked a question on Blind about progressive lenses. Lots of people said they have progressive lenses and they have zero problems.
If I was forced to guess, I would say that some (or maybe even all) of these folks who start talking about the computer glasses……it makes me wonder if they simply under-bought their lenses. Yes glasses are expensive. Getting a better lens will cost more. Yes yes, the Luxotica this and that. I don’t care about any of that crap. All I care about is getting the best lens possible and so should you!
Do what I mean!