Very Timely post Sunfish.
I've needed glasses for reading for about 6 years and it's getting further and further away. Now I need slight correction for distance as well. I have a pair of Tri-focals that work ok. The trouble is that I need 5 zones to see.....
1/ EFIS directly in front
2/ ENG instruments
3/ side panel for EFB/Paper charts
4/ outside.
5/ overhead panel
These Tri-focals work ok but the ENG instruments are not quite right and it annoys me.
I am thinking of trying progressives as well.
God getting old is a pain in the ass, come to think of it that area ain't good either!!