Thanks Clarrie:--- I've had glasses for reading for nearly 7 years now. I've had tri-focals made up for 2 years but I only used them when quite tired ( mainly for distance when tired ). I use the cheap chemist readers and look over the top for distance, but they no longer do the job as well as I now need. The trouble is that the expensive tri-focals are annoying me a bit ( can read the PFD clearly but not the ENG instruments ) , that's why I'm going to look at progressive glasses now.
I'm told they take a bit of getting used to..........especially in peripheral vision during landing?
It's all these different types of lens that's confusing that Flopt and Soup Nazi were talking about earlier in link 26 and 27.