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Vision2020Protocol3
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Each of the three bear their own merits and drawbacks. The glass lenses are featured with stable refractive index and optical characteristics. What's more, they are of great power to block UV. On the other side of the coin, glass lenses are heavy and breakable, which would bring harm to eyes. Resin lenses are of high visible light transmission and great power to block UV as well. Compared with glass lenses, they are wearable and much lighter. PC lenses, as well, are of high refractive index, but they are easy to get damaged.


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