Goodnight folks, just got home (having stopped for a meal on the way. The eye tests (scans) went quite well. I've got a cataract in both eyes, both right in the line of sight. The good news is, they don't yet cause any problems, So the specialist and I have decided to do nowt about them until the oldest one (about 5 years now) starts to 'bother' me. So, really, no news is good news.
Nice to see you all, Jazzy, Andyc, Ari, Chrise, GK and Tony (who has, once again, played a blinder). No need to post my working as Tony has provided everything. Wish I could solve like that!
Thanks also for the very nice remarks. Glad some of 'em caused a little head scratching.
Bless
John