2 lenses with opposite axial refractive power, usually used for astigmatism. Place the cross cylindrical lens on the cylindrical lens money to make an coincide with the cylindrical lens, and then reverse the cross cylindrical lens to rotate the 90 degrees.
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Place the cross cylindrical lens on the cylindrical lens money to make an coincide with the cylindrical lens, and then reverse the cross cylindrical lens to rotate the 90 degrees.2 lenses with opposite axial refractive power, usually used for astigmatism.
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This is an authentic period item not a copy or reproduction.
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A sample set of different shades in original box.
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4 Pcs Sunglasses Storage Bag Felt Pouch Drawstring Eyeglass Bags. 20 Pairs Glasses Leg Cover Covers Silicone Eyeglass Temple Sleeves. 12Pairs Comfortable Silicone Eyeglass Cushions For Running And Sports.
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2 lenses with opposite axial refractive power, usually used for astigmatism. Place the cross cylindrical lens on the cylindrical lens money to make an coincide with the cylindrical lens, and then reverse the cross cylindrical lens to rotate the 90 degrees.
eBay