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A member asked:
I was wondering what are the differences between polycarbonate, polycarbonate aspheric, and 1.67 high index lens?
A doctor has provided 1 answer
Lens materials: Polycarbonate and 1.67 high index are different types of plastics used to make lenses for glasses. Aspheric is a type of lens design. Generally the higher index of the plastic, the thinner the lens can made. Higher index materials may induce more distortion in the periphery of the vision.
Answered 4/1/2019
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