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REFRACTIVE INDEX and materials The higher the refractive index, the thinner, lighter and more attractive the lens is with the same diopter value. The Index of Refraction The higher the refractive index, the thinner, lighter and more attractive the lens at the same dioptre value. This not only increases comfort, but also makes them look […]https://www.wetzlich.de/wp-content/uploads/2019/09/Logo2.png984236