Interesting, so do you wear glasses only when you need to be able to see distant things?
Three years ago I bought myself new glasses but now I started noticing that they are no longer adequate when I have to look at distant objects. They are of course still perfect for watching computer screen. My plan is to buy myself new ones and use them only on occasions where I will need to look at distant things. For other needs I'll still use outdated ones.
As far as I am concerned I have evolved from something that needed to spot lions on the horizon to something that needs to spot trolls 0.5m away