I.S. EN ISO 19980:2021
Current
The latest, up-to-date edition.
Ophthalmic instruments - Corneal topographers (ISO 19980:2021)
Hardcopy , PDF
English
04-07-2021
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
5 Test methods and test devices
6 Accompanying documents
7 Marking
Annex A (informative) Test surfaces for corneal topographers (CTs)
Annex B (informative) Standardized displays for corneal topographers (CTs)
Annex C (normative) Calculation of area-weighting values
Annex D (normative) Test methods for measuring human corneas
Bibliography
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