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Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Contact lenses Methods of test for contact lenses
Hardcopy , PDF
15-10-1998
English
31-01-1992
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
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