Obtaining the topography of human corneas with the null-screen testing method

Manuel Campos-García; Victor Emanuel Armengol-Cruz; Daniel Aguirre Aguirre; Christian Camargo-Fierro

doi:10.1117/12.2314148

15 June 2018 Obtaining the topography of human corneas with the null-screen testing method

Manuel Campos-García, Victor Emanuel Armengol-Cruz, Daniel Aguirre Aguirre, Christian Camargo-Fierro

Proceedings Volume 10692, Optical Fabrication, Testing, and Metrology VI; 1069216 (2018) https://doi.org/10.1117/12.2314148
Event: SPIE Optical Systems Design, 2018, Frankfurt, Germany

Abstract

In this work, the topography of human corneas is evaluated with a conical corneal topographer based on the null-screen method. Geometrical parameters such as the radius of curvature and the conic constant, are obtained. Additionally, elevation, sagittal curvatures and meridional curvature maps can be calculated with the proposed method. Here, it is assumed that the shape of the cornea surface is an aspherical surface. To validate our proposal, we compare the results with those obtained by a commercial corneal topographer.

Citation Download Citation

Manuel Campos-García, Victor Emanuel Armengol-Cruz, Daniel Aguirre Aguirre, and Christian Camargo-Fierro "Obtaining the topography of human corneas with the null-screen testing method", Proc. SPIE 10692, Optical Fabrication, Testing, and Metrology VI, 1069216 (15 June 2018); https://doi.org/10.1117/12.2314148

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