195: Many of my patients work in the construction industry. I'm thinking of offering polycarbonate lenses instead of CR39 to those at risk of ocular trauma. Is this a good idea? -
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Durable Uncoating Semi Finished Lens Blanks CR39 1.499 Index Single Vision - Buy semi finished lens blanks, CR39 1.499 single vision lens, optical lens blanks Product on Jiangsu Aogang Optical Glasses Co., Ltd.
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