I wear no line trifocals. However I am fortunate enough to be able to focus on front bead with clarity. Rear sight is a bit fuzzy and so is the target, but that is the way it is supposed to be. Only difference is now the target and rear sight are fuzzier than they used to be. Plain old safety glasses work for me.
Scopes on the other hand are a breeze. I can set the focus on the rear optic for clarity. Obviously, anyone else shooting my scoped rifles are going to find it difficult.
Isnt age marvelous?????????
No such thing as a stupid question. What is stupid is not asking it.