Ophthalmic optics - Visual acuity testing - Standard and clinical optotypes and their presentation (ISO 8596:2017); German version EN ISO 8596:2018— 17 стр.
Ophthalmic optics - Visual acuity testing - Standard and clinical optotypes and their presentation (ISO 8596:2017 + Amd.1:2019); German version EN ISO 8596:2018 + A1:2020— 18 стр.
Ophthalmic optics - Visual acuity testing - Standard and clinical optotypes and their presentation (ISO/DIS 8596:2016); German and English version prEN ISO 8596:2016
Ophthalmic optics - Visual acuity testing - Standard and clinical optotypes and their presentation (ISO 8596:2017 + Amd.1:2019); German version EN ISO 8596:2018 + A1:2020— 18 стр.