BS EN ISO 8596:2018+A1:2020

This standard BS EN ISO 8596:2018+A1:2020 Ophthalmic optics. Visual acuity testing. Standard and clinical optotypes and their presentation is classified in these ICS categories:

• 11.040.70 Ophthalmic equipment

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.