1. Articles from Benjamin J. Coldrick

    1-2 of 2
    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
    2. A program to analyse optical coherence tomography images of the ciliary muscle

      A program to analyse optical coherence tomography images of the ciliary muscle

      Purpose To describe and validate bespoke software designed to extract morphometric data from ciliary muscle Visante Anterior Segment Optical Coherence Tomography (AS-OCT) images. Method Initially, to ensure the software was capable of appropriately applying tiered refractive index corrections and accurately measuring orthogonal and oblique parameters, 5 sets of custom-made rigid gas-permeable lenses aligned to simulate the sclera and ciliary muscle were imaged by the Visante AS-OCT and were analysed by the software. Human temporal ciliary muscle data from 50 participants extracted via the internal Visante AS-OCT caliper method and the software were compared. The repeatability of the software was also ...

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    1-2 of 2
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  2. Topics in the News

    1. (2 articles) Heidelberg Engineering
    2. (1 articles) Kate Sugden
    3. (1 articles) Carl Zeiss Meditec
    4. (1 articles) University of Ulsan
    5. (1 articles) The Chinese University of Hong Kong
    6. (1 articles) University of Groningen
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