Hey John,
I'll chime in here. After I turned 52 I needed to do something about my vision. Had trouble focusing on anything close. Especially flying at night.
So I got my first bifocals. All seemed great at the clinic, looking at charts & stuff. Then I rode home on my motorcycle and hated every minute of it. They didn't work for me with a full face helmet. With my head stationary I glance at my L or R mirrors and my brain wouldn't process very well. I felt like I was going to get a headache or light vertigo. I had to turn my whole head to view my mirrors and forget peripheral vision. I quit wearing them for a couple of years. Then I tried again. This time with progressives. After my ophthalmologist did the proper fit he told me to give it 30 days (to train my brain). Didn't like them at first either but that changed. Now I love them. Cant imagine flying without them. Day or night, panel, charts, GPS, full face helmet, peripheral, the whole deal... I'm with RockHopper....I love the progressive.
An ole dog can learn new tricks...Just have to train their brain...hah
Sam