eyeglasses

When I was sixteen, I was diagnosed with progressive myopia (nearsightedness), and prescribed eyeglasses. I was told that this was a genetic condition and that I would have to correct my vision for the rest of my life. Subsequent to that, with nearly each visit to the eye doctor (whose office...

I was surprised recently to see Penn Jillette selling eyeglasses on a late-night cable TV commercial. Apparently these "Superfocus" glasses use a liquid-filled membrane in the lens to adjust the prescription so a single pair of glasses can be used for near and far vision and points in between...