"People wearing glasses do everything not to wear glasses (contact lenses, eye laser treatments...) and people not wearing glasses do not to wear glasses". This is what I've learned after 2 years, and it is a big issue. How to convince someone to wear glasses everyday for 8 hours because he has to , but does not want to ? Well, this is mission impossible (but even in Mission Impossible the good guy always wins).
This is a big issue when you want to promote the use of Smart Glasses and nobody wants to wear glasses.