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Lens Form: Sphere, Cylinder, and Axis - Laramy-K Independent Optical Lab - Freeform Lenses and AR Coatings
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The eye defect, astigmatism can be corrected by using(a) Convex lens(b) Concave lens(c) Cylindrical lens(d) Surgery
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Cylindrical lens element - FUZHOU RISING ELECTRO OPTICS CO.,LTD. - plano- concave / plano-convex / BK7
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Lens Form: Sphere, Cylinder, and Axis - Laramy-K Independent Optical Lab - Freeform Lenses and AR Coatings
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