OH, okay, THANK YOU, for explaining that, to me too, Tom!
Wow, I am sure I made the correct decision for myself, but I can understand better, now, why someone else might want to try those.
I had trifocals with lines, instead of those no-lines, for some years, and found them easy to get used to,
and my bifocals also, always have had lines, and they are definitely best for me.
What's most important to me, myself, is to see better whatever I am possibly able to see, with the help of glasses, and to not have the glasses make me feel sick or fall, any more or easier than I do.
Thanks again, Tom. That's a great explanation!
And,
I am glad they replaced the glasses for you! I did go to a place, that did that for me, when/if I could not see as hoped, or could not adjust to the ones they filled.
But many places will not do that.