BS 7208-3:1992
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Contact lenses Methods of test for contact lenses
Hardcopy , PDF
English
31-01-1992
15-10-1998
BS EN ISO 14729:2001+A1:2010
BS EN ISO 11987:1998
BS EN ISO 14730:2000
BS EN ISO 11986:2001
BS EN ISO 10344:1998
BS EN ISO 9914:1997
BS EN ISO 11981:1999
BS EN ISO 14534:1998
BS EN ISO 8321-1:1997
BS EN ISO 11980:1998
BS 7208-24(2000) : 2000
BS 7208-19(2001) : 2001
BS EN ISO 9340:1999
BS 7208-16(1998) : 1998
BS EN ISO 11981:2009
BS EN ISO 10338:1998
BS 7208-15(1998) : 1998
BS 7208-7(1998) : 1998
BS EN ISO 9339-2:1998
BS EN ISO 9913-1:1998
BS EN ISO 9338:1998
BS 7208-5(1997) : 1997
BS EN ISO 11980:2012
BS EN ISO 9339-1:1998
BS EN ISO 10339:1999
BS EN ISO 10340:1997
BS 7208-14(1998) : 1998
BS EN ISO 8599:1997
BS EN ISO 8321-2:2000
BS 7208-22(1999) : 1999
BS EN ISO 11987:2012
BS EN ISO 9341:1998
BS 7208-10(1998) : 1998
BS 7208-8(1998) : 1998
BS 7208-25(2000) : 2000
BS 7208-4(1997) : 1997
BS 7208-12(1997) : 1997 AMD 10137
BS 7208-9(1999) : 1999
BS EN ISO 8320-2:2001
BS ISO 10339 : 1997 AMD 10605
BS 7208-18(1998) : 1998
BS EN ISO 14730:2014
Committees responsible
Foreword
Method
1 Scope
2 Definitions
3 Determination of radius of curvature using an optical
microspherometer
4 Determination of diameter, segment height and
location of fenestration
5 Determination of thickness
6 Determination of dioptric and prismatic powers
Appendices
A Calibration of test equipment
B Conditioning of lenses prior to testing
C Method of inspection for internal defects and surface
imperfections
Figures
1 Optical microspherometer, showing the images of
target T
2 Contact lens support compared with the spectacle lens
support which it replaces
Radius of curvature, thickness, diameter, segment height and dioptric and prismatic powers, as well as a subjective method for assessing defect.
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