For those of us with prescription glasses, we know that the devil is in the details.
I've had multiple pairs of glasses give me epic headaches because the PD (pupillary distance) was off.
I, like may of us, preordered a long while ago and my prescription is going to expire soon.
Is there a system in place for dealing with these details?
I'm sorry if I neglected to include other details that I couldn't think of off hand. Maybe some of the other forumfolk here have suggestions?