Last eye test I had, they said that I might need glasses for driving in the future.* Then had a consultation with one of their salesmen.
“Do you use computers?”
Only every waking hour, yes.
“Right, then you’ll want our special anti-reflective anti-UV coating.”
I don’t use a computer in the car.
“We’ve got this water-repellent coating…”
It doesn’t rain inside a car.
“Right, well, we’ve got (another coating I can’t remember the name of).” *proceeds to scribble on two pieces of glass with a marker pen*
I don’t stick pens in my eyes when I’m driving.
Etc etc.
(* – That is to say, in the future, I might need glasses. I don’t drive a DeLorean.)