Stemming from an initial design around physically blocking ads, [Citation Receieved] is now dedicated to a controllable bifocal system. A lens would be moved around on gears set up in a hypocycloid system, while CV would track an object that you point at in order to give you an ultra-clear focus on that object. While reading text, you could drag your finger over the text to focus on it, or just keep the bifocal in a middling or out-of-the-way position at the press of a button.