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  • NEN EN ISO 19980 : 2012

    Current The latest, up-to-date edition.

    OPHTHALMIC INSTRUMENTS - CORNEAL TOPOGRAPHERS

    Available format(s): 

    Language(s): 

    Published date:  12-01-2013

    Publisher:  Netherlands Standards

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    Table of Contents - (Show below) - (Hide below)

    Foreword
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Requirements
      4.1 Area measured
      4.2 Measurement sample density
      4.3 Measurement and report of performance
      4.4 Colour presentation of results
    5 Test methods and test devices
      5.1 Tests
      5.2 Test surfaces
      5.3 Data collection, test surfaces
      5.4 Analysis of the data
    6 Accompanying documents
    7 Marking
    Annex A (informative) Test surfaces for corneal
                          topographers
    Annex B (normative) Standardized displays for corneal
                        topographers
    Annex C (normative) Calculation of area-weighting values
    Annex D (normative) Test methods for measuring human corneas
    Bibliography

    Abstract - (Show below) - (Hide below)

    Defines minimum requirements for instruments and systems that fall into the class of corneal topographers (CTs).

    General Product Information - (Show below) - (Hide below)

    Document Type Standard
    Publisher Netherlands Standards
    Status Current
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