ANSI Z80.21 : 2010
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
OPHTHALMICS - INSTRUMENTS - GENERAL-PURPOSE CLINICAL VISUAL ACUITY CHARTS
Hardcopy , PDF
English
01-01-2015
19-05-2020
Foreword
1 Scope and purpose
2 Normative references
3 Clinical optotype calibration
4 System requirements
5 Application of standard
6 Marking
Annexes
Annex A (normative) - Method of correlating optotypes
Annex B (informative) - Bibliography
Pertains to displays of optotypes for all clinical visual acuity measurement systems that use recognition of high-contrast optotypes and that are designed for general use including optotypes printed on opaque media, those intended for transillumination, electronically generated or projected displays.
| Committee |
Z80
|
| DocumentType |
Standard
|
| Pages |
18
|
| PublisherName |
Optical Laboratories Association
|
| Status |
Superseded
|
| SupersededBy |
| ISO 10938:2016 | Ophthalmic optics — Chart displays for visual acuity measurement — Printed, projected and electronic |
| ISO 8596:2009 | Ophthalmic optics — Visual acuity testing — Standard optotype and its presentation |
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