ISO 8980-1:2004 pdf free.Ophthalmic optics — Uncut finished spectacle lenses — Part 1: Specifications for single-vision and multifocal lenses. This part of ISO 8980 specifies requirements for the optical and geometrical properties for uncut finished single-vision and multifocal spectacle lenses. 2 Normative references ISO 7944, Optics and optical instruments — Reference wavelengths ISO 8429, Optics and optical instruments — Ophthalmology...