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Modelling the Deformation of the Human Cornea Produced by a Focussed Air Pulse

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Computational Biomechanics for Medicine

Abstract

The Corvis ST is a new clinical device that records in vivo cross-sectional images showing corneal deformation during application of a focussed air pulse. The aim of this work was to use a fluid–structure interaction (FSI) analysis to simulate this scenario. The one-way coupling of FSI was based on the multi-field analysis (MFX) framework within the ANSYS software. The pressure forces generated from the air pulse were used as the boundary condition to drive the corneal deformation. In this preliminary work a nonlinear isotropic Neo-Hookean material was used to model the cornea. The data generated from the Corvis device, such as the applanation length, the cornea deflection amplitude, and the original image sequence, were used to calibrate and validate the corneal model. In conclusion this work established the FSI pipeline for analysis of the biomechanical properties of the cornea using the Corvis device.

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References

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Authors and Affiliations

  1. Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand

    Nouran Bahr, Peter Hunter & Harvey Ho

  2. Faculty of Medical and Health Sciences, Department of Ophthalmology, New Zealand National Eye Centre, University of Auckland, Auckland, New Zealand

    Noor Ali, Dipika Patel & Charles McGhee

Authors
  1. Nouran Bahr
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  2. Noor Ali
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  3. Dipika Patel
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  4. Charles McGhee
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  5. Peter Hunter
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  6. Harvey Ho
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Corresponding author

Correspondence to Harvey Ho .

Editor information

Editors and Affiliations

  1. School of Mech. and Chem. Engineering, The University of Western Australia, Perth, West Australia, Australia

    Barry Doyle

  2. School of Mech. and Chem. Engineering, The University of Western Australia, Perth, West Australia, Australia

    Karol Miller

  3. School of Mech. and Chem. Engineering, The University of Western Australia, Perth, West Australia, Australia

    Adam Wittek

  4. Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand

    Poul M.F. Nielsen

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© 2015 Springer International Publishing Switzerland

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Bahr, N., Ali, N., Patel, D., McGhee, C., Hunter, P., Ho, H. (2015). Modelling the Deformation of the Human Cornea Produced by a Focussed Air Pulse. In: Doyle, B., Miller, K., Wittek, A., Nielsen, P. (eds) Computational Biomechanics for Medicine. Springer, Cham. https://doi.org/10.1007/978-3-319-15503-6_9

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  • DOI: https://doi.org/10.1007/978-3-319-15503-6_9

  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-15502-9

  • Online ISBN: 978-3-319-15503-6

  • eBook Packages: EngineeringEngineering (R0)

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