People had to endure such inconveniences until the invention of prescription glasses. The history of prescription glasses is ...

Oh, those eyes. While we clean up, let's take a look at the long, long history of glass and I do mean long. JACK: Well, look what I found. This is obsidian, it's a type of natural glass.

We set out with the conviction that the looking-glass is absolutely necessary to human happiness. Of this we have no doubt, and so thoughtfully does nature cater to our needs that Adam and Eve ...