ISO 18369-3:2017 specifies 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. This document also specifies the equilibrating solution and standard saline solution for testing of contact lenses.
Tämän julkaisun valmistelusta Suomessa vastaa Yhteinen Toimialaliitto, www.ytl.fi.
Sisällysluettelo
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Methods of measurement for contact lenses
4.1 General
4.2 Radius of curvature
4.3 Label back vertex power
4.4 Diameters and widths
4.5 Thickness
4.6 Edge inspection
4.7 Determination of inclusions and surface imperfections
4.8 Spectral transmittance
4.9 Saline solution for testing
5 Test report
Annex A Measurement of rigid contact lens curvature using interferometry (informative)
Annex B Measurement of label back vertex power of soft contact lenses immersed in saline solution using the Moiré deflectometer or Hartmann methods (informative)
Annex C Measurement of the radius of curvature of contact lenses using the ophthalmometer (informative)
Annex D Paddle support for focimeters used for power measurements of contact lenses (informative)
4.7 Determination of inclusions and surface imperfections
4.8 Spectral transmittance
4.9 Saline solution for testing
5 Test report
Annex A Measurement of rigid contact lens curvature using interferometry (informative)
Annex B Measurement of label back vertex power of soft contact lenses immersed in saline solution using the Moiré deflectometer or Hartmann methods (informative)
Annex C Measurement of the radius of curvature of contact lenses using the ophthalmometer (informative)
Annex D Paddle support for focimeters used for power measurements of contact lenses (informative)
ISO 18369-1:2017 Ophthalmic optics -- Contact lenses -- Part 1: Vocabulary, classification system and recommendations for labelling specifications
ISO 3696:1987 Water for analytical laboratory use -- Specification and test methods
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 18369-1:2017 Ophthalmic optics -- Contact lenses -- Part 1: Vocabulary, classification system and recommendations for labelling specifications
ISO 3696:1987 Water for analytical laboratory use -- Specification and test methods
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