In our modern age of computers, TV, and legally required decade-long education, nearsightedness is very common yet easily worked around with glasses/contacts/laser surgery.
Yet in the times before glasses, while they did not have TV and such, I'd imagine that plenty of nobles and knights had to read a fair amount.
My parents and grandparents all have had poor vision when they were my age from only reading books.
Wouldn't many knights/nobles in the old days have to deal with this issue? I'd imagine that swordsmanship was taught to even those that read a lot, and I'm wondering if there are any records of anything regarding nearsightedness and combat.

