By Eluned Creighton-Sims FBDO on behalf of IOT
Progressive power lenses have come a long way since Owen Aves was granted a patent in 1907 for the first description of such a design. From what was essentially progressive cross-cylinders on both surfaces to the freeform manufactured designs we have today, progressive lens design has become extremely complex and is now more an industry of software development – a multidisciplinary field where optometrists, physicists, mathematicians, and engineers strive to find the next generation of design technology.
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