I've got middle-aged eyes and need glasses to see worth a darn (I'm farsighted).
To read a book, I like 2.5 or even 2.75 diopters.
To read a computer monitor or the labels on items on a supermarket shelf 4 feet away, I like 2 or 2.25 diopters.
So see well at infinity, for driving, I like 1.5 diopters.

Question: When I'm using my Leupold Mark 4 scope (6.5-20X), should I wear eyeglasses (other than safety glasses)?

I usually take my glasses off and simply adjust the rear lens on the riflescope (this requires a LOT of adjustment) but I'm beginning to wonder whether this might introduce errors/parallax/inconsistency.

What is the "standard" or "preferred" way to use a riflescope for farsighted people like me, who need correction even for an infinity focus? Glasses or no glasses?

I can't believe I've never asked one of my eyeglass guys this question...

Thanks in advance for any answers.