NS EN ISO 8597 : 1ED 1996
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
OPTICS AND OPTICAL INSTRUMENTS - VISUAL ACUITY TESTING - METHOD OF CORRELATING OPTOTYPES
01-10-2012
12-01-2013
Committees responsible
National foreword
Foreword
Method
1 Scope
2 Normative references
3 General requirements for optotypes
4 Correlation of optotypes
5 Assignment of an acuity score
6 Assessing the equivalence of two kinds of optotypes
7 Significance of the difference between the two averages
Annex
A (normative) Normative references to international
publications with their corresponding European publications
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