My husband and I both wear period correct glasses. I bought stainless steel (farby) frames and then had our prescription lenses put in them. Mine even have half moon bifocals in them. Not horribly expensive unless your prescription is. You can see them in my profile pic. I actually like the half moon bifocals better than my invisible ones.You mean farb fetched? ( sorry..... ) I'm glad to know I wasn't the only one! Had to ask because as you say we see the term frequently.
DO some reenactors have period correct glasses? That could get expensive in a big hurry. If it's any comfort to reenactors most of us out here just don't know a lot about these details- we're just attracted by what seems a walking, camping documentary on the war.
Bring back photos please!