ISO 8980-1:2004 pdf download – phthalmic optics-Uncut finishedspectacle lenses – Part 1: Specifications for single-vision and multifocal lenses
ISO 8980-1:2004 pdf download – phthalmic optics-Uncut finishedspectacle lenses – Part 1: Specifications for single-vision and multifocal lenses. 6 Test methods 6.1 General A lens measured with a focarieter calibrated to the mercury e-Iine reference wavelength may show a difference...