
CONTACT LENSES - METHODS OF TEST FOR CONTACT LENSES
出版:British Standards Institution

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基本信息
标准编号: BS 7208-3(1992) : 1992
发布时间:1992/1/1 0:00:00
标准类别:Standard
出版单位:British Standards Institution
标准页数:12
标准简介
Gives a number of methods of test for contact lenses. Covers definitions, determination of radius of curvature using an optical microspherometer, determination of diameter, segment height and location of fenestration, thickness, dioptric and prismatic powers. Appendices cover calibration of test equipment, conditioning of lenses prior to testing and a method of inspection for internal defects and surface imperfections.
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