1. Articles from Colin Richards

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    1. Developments in contact lens measurement: A comparative study of industry standard geometric inspection and optical coherence tomography

      Developments in contact lens measurement: A comparative study of industry standard geometric inspection and optical coherence tomography

      Purpose The aim of this study was to compare a developmental optical coherence tomography (OCT) based contact lens inspection instrument to a widely used geometric inspection instrument (Optimec JCF), to establish the capability of a market focused OCT system. Methods Measurements of 27 soft spherical contact lenses were made using the Optimec JCF and a new OCT based instrument, the Optimec is830. Twelve of the lenses analysed were specially commissioned from a traditional hydrogel (Contamac GM Advance 49%) and 12 from a silicone hydrogel (Contamac Definitive 65), each set with a range of back optic zone radius (BOZR) and centre ...

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      Mentions: Kate Sugden
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