Tunable glasses are great for developing countries as well, where eye doctors are scarce, even when the focus is not automatic [1]. These glasses still require

Tunable glasses are great for developing countries as well, where eye doctors are scarce, even when the focus is not automatic [1]. These glasses still require perfectly circular lenses, right? That's a bigger hindrance than slimming down the clunky prototype. [1] https://www.wired.com/2010/07/fluid-filled-adjustable-eye-glasses/ https://www.wired.com/2010/07/fluid-filled-adjustable-eye-gl...