Interestingly Dull Factoid #1

Cobblers!
Shoemakers infact, used to perform minor operations such as cataract removal, because they had the skills, strength and more importantly speed (before anaesthetics) with a needle.

Since surgeons became more competent and the introduction of anaesthetics and the need for a more hygenic environment became more popular, shoemakers had to supplement their income in some other way, hence the reason why key cutting has replaced surgical procedures at Mr. Minit