EN ISO 8596:2018
Ophthalmic optics - Visual acuity testing - Standard and clinical optotypes and their presentation

Standard No.

EN ISO 8596:2018

Release Date

2018

Published By

CEN - European Committee for Standardization

Status

Be replaced 2020-04

Replace By

EN ISO 8596:2018/A1:2020

Latest

EN ISO 8596:2018/A1:2020

Scope

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.

EN ISO 8596:2018 history

• 2020 EN ISO 8596:2018/A1:2020 Ophthalmic optics - Visual acuity testing - Standard and clinical optotypes and their presentation - Amendment 1 (ISO 8596:2017/Amd1:2019)
• 2018 EN ISO 8596:2018 Ophthalmic optics - Visual acuity testing - Standard and clinical optotypes and their presentation
• 2009 EN ISO 8596:2009 Ophthalmic optics - Visual acuity testing - Standard optotype and its presentation (ISO 8596:2009)
• 1996 EN ISO 8596:1996 Ophthalmic Optics - Visual Acuity Testing - Standard Optotype and Its Presentation (ISO 8596 : 1994)