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About This Item

 

Full Description

ISO 8596:2017 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.

ISO 8596:2017 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.

 

Document History

  1. ISO 8596:2017

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    Ophthalmic optics - Visual acuity testing - Standard and clinical optotypes and their presentation

    • Most Recent
  2. ISO 8596:2009


    Ophthalmic optics - Visual acuity testing - Standard optotype and its presentation

    • Historical Version
  3. ISO 8596:1994


    Ophthalmic optics -- Visual acuity testing -- Standard optotype and its presentation

    • Historical Version
 

Amendments, rulings, supplements, and errata

  1. ISO 8596:2017/Amd1:2019


    - Amendment 1