Yes, you do need to bring an extra pair of eyeglasses.
Prescription eyeglasses and prescription sunglasses overseas can cost from twice to 10 times as much as they do in the US, depending on the country. (It scares me how many locals might be driving around without proper glasses because they cost so darn much!)
But, you DON’T want to bring a big old heavy glasses case!
So here is the solution.
It is small.
Comes in a variety of colors.