Jason Turuwhenua

Summary

Affiliation: University of Auckland
Country: New Zealand

Publications

  1. ncbi request reprint A novel low-order method for recovery of the corneal shape
    Jason Turuwhenua
    Department of Physics and Electronic Engineering, University of Waikato, Hamilton, New Zealand
    Optom Vis Sci 81:863-71. 2004
  2. doi request reprint Fully automated montaging of laser scanning in vivo confocal microscopy images of the human corneal subbasal nerve plexus
    Jason T Turuwhenua
    Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
    Invest Ophthalmol Vis Sci 53:2235-42. 2012
  3. ncbi request reprint The recovery of posterior cornea and anterior lens radii by a novel ray-tracing method
    Jason Turuwhenua
    Department of Physics and Electronic Engineering, University of Waikato, Hamilton, New Zealand
    Optom Vis Sci 81:884-94. 2004
  4. ncbi request reprint A theoretical study of intraocular lens tilt and decentration on perceptual image quality
    Jason Turuwhenua
    Faculty of Science, University of Auckland, Private Bag 92019, Auckland, New Zealand
    Ophthalmic Physiol Opt 25:556-67. 2005
  5. doi request reprint An improved low order method for corneal reconstruction
    Jason Turuwhenua
    Bioengineering Institute, Faculty of Engineering, University of Auckland, Auckland, New Zealand
    Optom Vis Sci 85:211-7. 2008
  6. doi request reprint Reconstructing ocular surfaces by Purkinje images: an exact ray approach
    Jason Turuwhenua
    Bioengineering Institute, University of Auckland, Private Bag, Auckland, New Zealand
    Ophthalmic Physiol Opt 29:80-91. 2009
  7. doi request reprint Reconstructing ocular surfaces by Purkinje images using an exact ray approach: estimating IOL decenter and tilt
    Jason Turuwhenua
    Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
    Ophthalmic Physiol Opt 30:43-54. 2010
  8. doi request reprint Eye for modeling visual distortion in central serous retinopathy
    Jason Turuwhenua
    Auckland Bioengineering Institute, Department of Optometry and Vision Science, University of Auckland, Auckland, New Zealand
    Optom Vis Sci 88:1363-8. 2011
  9. ncbi request reprint Corneal surface reconstruction algorithm using Zernike polynomial representation: improvements
    Jason Turuwhenua
    Bioengineering Institute, Faculty of Engineering, University of Auckland, New Zealand
    J Opt Soc Am A Opt Image Sci Vis 24:1551-61. 2007

Detail Information

Publications9

  1. ncbi request reprint A novel low-order method for recovery of the corneal shape
    Jason Turuwhenua
    Department of Physics and Electronic Engineering, University of Waikato, Hamilton, New Zealand
    Optom Vis Sci 81:863-71. 2004
    ..The method uses an iterative cubic approach with implicit continuous curvature. Convergence is easily established for a particular videokeratograph. The effect of skew rays is treated in a postprocessing step...
  2. doi request reprint Fully automated montaging of laser scanning in vivo confocal microscopy images of the human corneal subbasal nerve plexus
    Jason T Turuwhenua
    Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
    Invest Ophthalmol Vis Sci 53:2235-42. 2012
    ..A typical montage contains several hundred images to be quality checked and manually arranged. The purpose of this study was to develop and validate software for off-line montaging of IVCM images of the living human cornea...
  3. ncbi request reprint The recovery of posterior cornea and anterior lens radii by a novel ray-tracing method
    Jason Turuwhenua
    Department of Physics and Electronic Engineering, University of Waikato, Hamilton, New Zealand
    Optom Vis Sci 81:884-94. 2004
    ..This article describes (1) a telecentric ray-finding method; and (2) its application to the problem of determining posterior cornea (R2) and anterior lens (R3) radii by a regression procedure that addresses these issues...
  4. ncbi request reprint A theoretical study of intraocular lens tilt and decentration on perceptual image quality
    Jason Turuwhenua
    Faculty of Science, University of Auckland, Private Bag 92019, Auckland, New Zealand
    Ophthalmic Physiol Opt 25:556-67. 2005
    ..The SQRI maps conveniently summarize imaging, and may be a useful tool in assessing image quality in eye modelling applications...
  5. doi request reprint An improved low order method for corneal reconstruction
    Jason Turuwhenua
    Bioengineering Institute, Faculty of Engineering, University of Auckland, Auckland, New Zealand
    Optom Vis Sci 85:211-7. 2008
    ..The method was compared with a similar method described by Klein, and also with a least squares based approach using Zernike polynomials...
  6. doi request reprint Reconstructing ocular surfaces by Purkinje images: an exact ray approach
    Jason Turuwhenua
    Bioengineering Institute, University of Auckland, Private Bag, Auckland, New Zealand
    Ophthalmic Physiol Opt 29:80-91. 2009
    ..The nominal refractive index (n = 1.3305) was sub-optimal in all cases. The resulting method is a potentially useful way to estimate the geometry of the internal ocular surfaces...
  7. doi request reprint Reconstructing ocular surfaces by Purkinje images using an exact ray approach: estimating IOL decenter and tilt
    Jason Turuwhenua
    Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
    Ophthalmic Physiol Opt 30:43-54. 2010
    ..4760 (at lambda = 880 nm) for the IOL, fits the 'full eye' results most consistently. Lens decenter is consistently estimated to within 0.015 mm (for a 1 mm decenter), and tilt <0.15 degrees (for a 5 degree tilt)...
  8. doi request reprint Eye for modeling visual distortion in central serous retinopathy
    Jason Turuwhenua
    Auckland Bioengineering Institute, Department of Optometry and Vision Science, University of Auckland, Auckland, New Zealand
    Optom Vis Sci 88:1363-8. 2011
    ..To present a simple mathematical eye model capable of modeling the metamorphopsia (visual distortion) reported by patients with central serous retinopathy (CSR)...
  9. ncbi request reprint Corneal surface reconstruction algorithm using Zernike polynomial representation: improvements
    Jason Turuwhenua
    Bioengineering Institute, Faculty of Engineering, University of Auckland, New Zealand
    J Opt Soc Am A Opt Image Sci Vis 24:1551-61. 2007
    ..Further investigation shows that the finite Zernike representation affected the reported results. The p-value should therefore be used with caution as an efficacy measure...