Tag: Essilor
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What Are Rear Surface Progressive/Varifocal Lenses?
A Brief History of Progressive/Varifocal Lenses The first commercially available Progressive (Varifocal) lens now referred to as the Varilux 1 was introduced by Essel (now called Essilor) in the early 1960’s. There have been considerable improvements in both design and production technology since, and today there are many different designs of progressive lens available in…