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Neue DIN- und ISO-Normen zur Sehschärfebestimmung

Wesemann, W. ; Heinrich, S. P. ; Jägle, H. ; Schiefer, U. ; Bach, M.


Recently, three international norms (ISO) for visual acuity assessment were revised. The DIN EN ISO 8596:2018 stipulates the Landolt C eye chart as the standard optotype and specifies display characteristics. An informative annex lists clinical optotypes for the first time. These include the ETDRS chart, Snellen chart and pediatric optotypes; however, these clinical optotypes do not have the same ...


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