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STN is a protected designation of Slovak national technical standards.
Ophthalmic optics - Visual acuity testing -- Standard and clinical optotypes and their presentation (ISO 8596:2017)
Standard published on 1.7.2018
Selected format:Ophthalmic optics - Visual acuity testing -- Standard and clinical optotypes and their presentation (ISO 8596:2017)
Change published on 1.7.2020
Selected format:Ophthalmic optics - Visual acuity testing - Standard optotype and its presentation (ISO 8596:2009)
WITHDRAWN published on 1.11.2009
Selected format:Ophthalmic optics. Visual acuity testing. Standard optotype and its presentation
WITHDRAWN published on 1.8.1999
Selected format:Optics and photonics - Reference wavelengths (ISO 7944:2024)
Standard published on 1.3.2025
Selected format:Optics and optical instruments. Visual acuity testing. Method of correlating optotypes
WITHDRAWN published on 1.6.1999
Selected format:Ophthalmic instruments - Trial frames (ISO 12867:2010)
Standard published on 1.10.2010
Selected format:Ophthalmic instruments. Trial frames
WITHDRAWN published on 1.12.2000
Selected format:Optics and optical instruments. Reference wavelengths (ISO 7944:1998)
WITHDRAWN published on 1.1.2001
Selected format:Ophthalmic instruments - Retinoscopes (ISO 12865:2006)
Standard published on 1.12.2006
Selected format:Latest update: 2026-08-26 (Number of items: 2 298 418)
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