@davidaugust
I don't think people understand the idea of free Healthcare. Yes, paying for it in taxes, means it's not free. However, paying for it in taxes means, I don't have to go six years without glasses because I can't afford the exam. It means if my glasses break today, I can go to get an exam, get my prescription and go to get my glasses without taking from my food, rent, and clothing.
Not sure about glasses outside of the US, is that a separate charge?