A New Method for Reconstruction of Corneal Topography with Placido Disk System

De Wei Gong; Jian Hai Chen; Chao Yuan; Ren Kai Ge; Ming Hua Zhou

doi:10.4028/www.scientific.net/AMR.974.373

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 974A New Method for Reconstruction of Corneal...

A New Method for Reconstruction of Corneal Topography with Placido Disk System

Abstract:

Many methods to reconstruct the corneal topography are based on the Placido disk system. The skew rays can contribute errors to the system when using the reflection image with these methods. To overcome this limitation, a backward ray tracing technique is developed. By performing this technique, a continuous surface representation of the cornea is obtained. The error analysis shows an enhanced accuracy in reconstructing the corneal topography. The colormaps of corneal surface powers are also drawn for graphic representations of corneal topography.

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Periodical:

Advanced Materials Research (Volume 974)

Pages:

373-378

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.974.373

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Online since:

June 2014

Authors:

De Wei Gong*, Jian Hai Chen, Chao Yuan, Ren Kai Ge, Ming Hua Zhou

Keywords:

Colormaps, Corneal Topography, Ray Tracing, Reconstruction

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* - Corresponding Author

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