OLED screens are virtually everywhere, and they're steadily getting bigger, but it was tough to find any in hospitals until now. While Sony's 25-inch PVM-2551MD might not have the most glamorous name, it's the first and only OLED monitor with FDA approval for use in surgery. No, it's not just to give the doctor something more pleasing (or disgusting) to look at while she's removing a gallstone -- the organic display can be a