ISO 8596:2017-11

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

German title: Augenoptik - Sehschärfeprüfung - Normsehzeichen und klinische Sehzeichen und ihre Darbietung
Publication date: 2017-11
Original language: English
Pages: 10

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Content

Content (en)

Foreword
Scope
Normative references
Terms and definitions
Requirements
- Specifications of the standard optotype
- Visual acuity grades and standard optotype grades
- Test area and spacing between standard optotypes
- Positions of the optotype
- Quality of presentation
- Luminance
Test methods
- Viewing distance for distance visual acuity testing
- Criteria for determination and assignment of visual acuity grade
Test report
Optotypes for clinical investigations (informative)
- General
- Types of optotypes for clinical use
- Size of optotypes
- Logarithmic progression of optotype sizes
- Criteria for determination and assessment of visual acuity using ETDRS or Bailey Lovie Charts
- Presentation of clinical optotypes
- Luminance of background
Bibliography

ICS

11.040.70

Replacement amendments

This document replaces ISO 8596:2009-07 .

This document has been modified by: ISO 8596 AMD 1:2019-11

Cooperation at DIN

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