Industrious merchant who could see the potential profit would not resent this problem because it is obvious that today, there are tons of eyeglasess with distinct differences. Today the use of eyeglasses is not only for the vision necessity, it is also for fashion. Since the frame shapes uniquely to the face, eyeglasses can feign the real look of someone's face. For trendy people, making smug look of the face might be something interesting. Not to mention they must be addicted to allocate their obsolete eyeglasses with the new ones.
Since visual technology rules right now, is it also posible to make a visual eyeglasses? Some patrons will be excited to contribute in this invention, right?