2005NF S11-425:2005 Ophthalmic optics - Uncut finished spectacle lenses - Part 3 : transmittance specifications and test methods.
1999NF S11-425:1999 OPHTHALMIC OPTICS. UNCUT FINISHED SPECTACLE LENSES. PART 3: TRANSMITTANCE SPECIFICATIONS AND TEST METHODS. (EUROPEAN STANDARD EN ISO 8980-3).