Cuttle fish see better than we do! They can also change colour, politicians don't even blush when they skin their own people alive!
You need eyes to see, and a brain to work it out,
some times glasses work and of course if you are a politician you might need a heart. I have a bad neck, one side is really bad, most of the routes I did in a huge cave went right to left! Anyway you might have seen climbing glasses or heard of them, but I will recommend them for some people, people like me need them for sure. Strangely climbing wall folk need them more than most. If you get a chance check them out, these ones are reasonably priced and made from good quality glass. Plus I like the guys behind the company.
I have been training this week, its hard, same as it ever was, not very good. But I did get a 30 meter dive, probably my best for years! Good luck to anybody else who is training this week.