I had to wear glasses to see clearly from a young age (short sighted) but could always cope without them in general life and my close up vision was fantastic, from about 30 onwards my distance vision improved a fair bit but as I got a bit older my close up vision started to go to the point where now (mid 50s) I need 2 pairs to see clearly (reading glasses and distance ones)
I tip for those who buy the cheap reading glasses though (and lose them) go to an opticians and get the right prescription for your eyes, it is amazing how paying £100+ for a pair increases your respect for them to the point where you'll always know where they are when you want them and how much more care you take of them.