NBN EN ISO 18369-3 : 2006

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Methods of measurement for contact lenses
  4.1 Radius of curvature
  4.2 Back vertex power
  4.3 Diameters and widths
  4.4 Thickness
  4.5 Inspection of edges, inclusions and surface imperfections
  4.6 Determination of spectral and luminous transmittance
  4.7 Saline solution for contact lens testing
5 Test report
Annex A (informative) Measurement of rigid contact lens
        curvature using interferometry
Annex B (informative) Determination of back vertex power
        of soft contact lenses immersed in saline using
        the Moire deflectometer or Hartmann methods
Bibliography

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