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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 7 — Mar. 1, 2013
  • pp: C24–C29

Open-access operating algorithms for commercial videokeratographer and improvement of corneal sampling

Julián Espinosa, David Mas, Jorge Pérez, and Ana Belén Roig  »View Author Affiliations

Applied Optics, Vol. 52, Issue 7, pp. C24-C29 (2013)

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We present an algorithm to process images of reflected Placido rings captured by a commercial videokeratoscope. Raw data are obtained with no Cartesian-to-polar-coordinate conversion, thus avoiding interpolation and associated numerical artifacts. The method provides a characteristic equation for the device and is able to process around 6 times more corneal data than the commercial software. Our proposal allows complete control over the whole process from the capture of corneal images until the computation of curvature radii.

© 2013 Optical Society of America

OCIS Codes
(100.2000) Image processing : Digital image processing
(330.7327) Vision, color, and visual optics : Visual optics, ophthalmic instrumentation

Original Manuscript: September 25, 2012
Revised Manuscript: November 19, 2012
Manuscript Accepted: December 10, 2012
Published: January 21, 2013

Virtual Issues
Vol. 8, Iss. 4 Virtual Journal for Biomedical Optics

Julián Espinosa, David Mas, Jorge Pérez, and Ana Belén Roig, "Open-access operating algorithms for commercial videokeratographer and improvement of corneal sampling," Appl. Opt. 52, C24-C29 (2013)

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