Yeah the old scratched lenses and old eyes don't make it easy!
clean covers and a good worklight as has been mentioned numerous times , as for the age thing...nope just live in denial there's nothing else!
Got new lenses ordered off fleabay then discovered half a dozen new ones were sitting in the old original box that the helmet came in.... idiot.... Also bought a times 2 cheater lens so seeing things a lot better now!