What are the advantages and disadvantages of polycarbonate spectacle lenses?
Polycarbonate lenses are made by injection moulding. They have good impact resistance and are therefore ideal for children, sports and industrial purposes. Polycarbonate material has good UV protection and a higher refractive index than standard plastic.Polycarbonate lenses do however have a poorer abrasion resistance than standard plastic, so a scratch resistant coating is imperative. They can also not be tinted easily.
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