The astronauts on the Discovery right now are actually quite old! The average age on the shuttle is 48 and many suffer from presbyopia, meaning they need some sort of glasses to help 'em out. Enter Superfocus glasses.
Ever wanted the text of your local newspaper BIGGER? Reading glasses don't always cut it. But this reading magnifier can! It zooms in 2.2-3.4x without distorting the text. It's like zooming in with a DSLR lens. Or using multitouch on print.
Reading while flat on your back's difficult. You need to either prop up your head or hold the book awkwardly above your face. Why go through that when you can use these glasses to "bend your vision" and remain supine?