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Standard Number BS EN ISO 21987:2017
Title Ophthalmic optics. Mounted spectacle lenses
Status Current
Publication Date 15 September 2017
Descriptors: Optical phenomena, Tolerances of position, Lenses, Angular tolerances, Optics, Optical measurement, Fitting, Ophthalmology, Marking, Spectacles (eyeglasses), Focal length, Dimensional tolerances, Bevelled, Ophthalmic equipment, Spectacle lenses, Circular shape, Prisms (optical), Visual inspection (testing), Surface treatment, Tolerances (measurement)
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