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  • BS EN ISO 18369-3:2017

    Current The latest, up-to-date edition.

    Ophthalmic optics. Contact lenses Measurement methods

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  30-04-2018

    Publisher:  British Standards Institution

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

    Foreword
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Methods of measurement for contact lenses
    5 Test report
    Annex A (informative) - Measurement of rigid
            contact lens curvature using interferometry
    Annex B (informative) - Measurement of label
            back vertex power of soft contact lenses
            immersed in saline using the Moire
            deflectometer or Hartmann methods
    Annex C (informative) - Measurement of the
            radius of curvature of contact lenses using
            the ophthalmometer
    Annex D (informative) - Paddle support for
            focimeters used for power measurements
            of contact lenses
    Bibliography

    Abstract - (Show below) - (Hide below)

    Defines the methods for measuring the physical and optical properties of contact lenses specified in ISO 18369-2, i.e. radius of curvature, label back vertex power, diameter, thickness, inspection of edges, inclusions and surface imperfections and determination of spectral transmittance.

    Scope - (Show below) - (Hide below)

    This document specifies the methods for measuring the physical and optical properties of contact lenses specified in ISO18369‑2 , i.e. radius of curvature, label back vertex power, diameter, thickness, inspection of edges, inclusions and surface imperfections and determination of spectral transmittance. This document also specifies the equilibrating solution, i.e. standard saline solution, for testing of contact lenses.

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

    Committee CH/172/9
    Development Note Supersedes BS EN ISO 10338, BS EN ISO 10344, BS EN ISO 8599, BS EN ISO 9337-1, BS EN ISO 9337-2, BS EN ISO 9338, BS EN ISO 9339-1, BS EN ISO 9339-2 and BS EN ISO 9341. Supersedes 04/30088797 DC (10/2006) Supersedes BS 7208-8(1998), BS 7208-11(1998), BS 7208-10(1998), BS 7208-15(1998), BS 7208-18(1998), BS 7208-4(1997) & BS 7208-7(1998). (05/2013) Supersedes 16/30310662 DC.(10/2017)
    Document Type Standard
    Publisher British Standards Institution
    Status Current
    Supersedes

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 5725-1:1994 Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions
    ISO 18369-1:2017 Ophthalmic optics — Contact lenses — Part 1: Vocabulary, classification system and recommendations for labelling specifications
    ISO 14534:2011 Ophthalmic optics Contact lenses and contact lens care products Fundamental requirements
    ISO 9342-1:2005 Optics and optical instruments — Test lenses for calibration of focimeters — Part 1: Test lenses for focimeters used for measuring spectacle lenses
    ISO 10343:2014 Ophthalmic instruments — Ophthalmometers
    ISO 18369-2:2017 Ophthalmic optics — Contact lenses — Part 2: Tolerances
    ISO 5725:1986 Precision of test methods Determination of repeatability and reproducibility for a standard test method by inter-laboratory tests
    ISO 3696:1987 Water for analytical laboratory use — Specification and test methods
    ISO 18369-4:2017 Ophthalmic optics — Contact lenses — Part 4: Physicochemical properties of contact lens materials
    ISO 8598-1:2014 Optics and optical instruments — Focimeters — Part 1: General purpose instruments
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