Why not build in an autofocus mechanism?
In our modern, high-tech world, we are accustomed to thinking that the high-tech solution to any problem is always best. But, sometimes simpler is better. TruFocals already make use of the best autofocus circuitry in the world: the one built into our own bodies. Therefore, focusing soon becomes so automatic that you don’t even think about it. In any case, you don’t refocus TruFocals all the time – only when you need to. Many times, you will find yourself focusing them to an intermediate position that adequately covers the exact range of distance you have to see for a given task. A good autofocus system for glasses would almost have to read your mind to know when to focus, what to focus on, and what compromises to make to cover a range of distances. If it gets any of this wrong, even 10% of the time, the consequences are going to drive you crazy. A good autofocus system for glasses should also be far smaller and lighter than any technology that currently exists, and ideally would not re
