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Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
OPHTHALMICS - INSTRUMENTS - GENERAL-PURPOSE CLINICAL VISUAL ACUITY CHARTS
Hardcopy , PDF
19-05-2020
English
01-01-2015
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
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