| Título: | Optical surface reconstruction technique through combination of zonal and modal fitting |
| Autores: |
Espinosa Tomás, Julián Mas Candela, David Pérez Rodríguez, Jorge Illueca Contri, Carlos |
| Fecha: |
2010-05-03 2010-05-03 2010 2010-04-16 |
| Publicador: | RUA Docencia |
| Fuente: |
 |
| Tipo: | info:eu-repo/semantics/article |
| Tema: |
Zernike polynomials Wavefront error Surface reconstruction Corneal irregularities Óptica |
| Descripción: |
Videokeratometers and Scheimpflug cameras permit accurate estimation of corneal surfaces. From height data it is possible to adjust analytical surfaces that will be later used for aberration calculation. Zernike polynomials are often used as adjusting polynomials, but they have shown to be not precise when describing highly irregular surfaces. We propose a combined zonal and modal method that allows an accurate reconstruction of corneal surfaces from height data, diminishing the influence of smooth areas over irregular zones and vice versa. The surface fitting error is decreased in the considered cases, mainly in the central region, which is more important optically. Therefore, the method can be established as an accurate resampling technique. Consellería de Educación project GV/2009/002 from the Generalitat Valenciana. |
| Idioma: | Inglés |
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