DNS/ISO 8596: 2017

OPHTHALMIC OPTICS — VISUAL ACUITY TESTING — STANDARD AND CLINICAL OPTOTYPES AND THEIR PRESENTATION (ISO 8596: 2017, IDT)


Status: Public comments
Start date: 20240718
End date: 20240916

This document specifies a range of Landolt ring optotypes and describes a method for measuring  distance visual acuity under photopic conditions for the purposes of certification or licensing. 

This document is neither intended as a standard for clinical measurements nor for the certification of  blindness or partial sight. 

Other optotypes used for clinical investigations are described in Annex A for information. 


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