T: Let's begin "Why, How, Peko-chan"!

T: This video peksplores the little mysteries in real life and solves them!

T: This is the first mystery!

T: What did people of the past do when their eyesight deteriorated?

S: I guess they didn't have spektacles or contact lenses...

T: ...Uh, who are you?

S: I'm Usada Pekora, a student. I was told a wise and lovely teacher could teach me lots of things.

T: I like you. You're full of respekt.

T: The Great Teacher Pekora will teach you pekompletely perfectly!

S: What a pushover.

T: Shaddup.

T: Anyway, when their eyesight went bad, the people of the past just... dealt with it.

S: That's a musclebrained answer right off the bat.

T: Power was power back in the old days.

T: It's unclear exactly when, but it's generally accepted that spektacles were invented in 13th century Europe and arrived in Japan along with Christian missionaries. The modern-day spektacles took hold in society starting in the mid-1800s.

T: Well, they didn't have PCs or smartphones, so maybe it didn't bother them too much if their eyesight went a little pekut.

S: That scenari-o sounds like hell to me, though!