Smart Glasses With Liquid Lenses That Adjust To Any Prescription
American optometrists have a racket enforced by la... ...says correctional lenses can't be sold without a prescription , and patients must update their prescription every year (or two for glasses ).But most people don't really need to upd...
https://www.neatorama.com/2017/03/07/Smart-Glasses-With-Liquid-Lenses-That-Adjust-To-Any-Prescription/
