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...lens 1.50 HMC Single Vision optical resin lenses high quailty (ISO9001&FDA&CE) CR-39 1.499 optical lensUS $ 1.24/pair 1.2.1stock 1.56 single vision HMC middle index myopia optical Resin lenses free shipping ...
Bifocal Lens With a segment in the lower area of the lens, a bifocal lens displays two different dioptric powers, which provides presbyopes with clear vision for both near and distance visions. Product Parament...