Propagation and phase reconstruction of ocular wavefronts with SAR techniques
Autor: | Carlos Illueca, Juan Jose Miret, David Mas, Jorge Pérez, Jessica Rouarch, Julián Espinosa |
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Přispěvatelé: | Universidad de Alicante. Departamento de Óptica, Farmacología y Anatomía, Óptica y Ciencias de la Visión |
Rok vydání: | 2008 |
Předmět: |
Synthetic aperture radar
genetic structures Zernike polynomials Cálculo de la integral de Fresnel Phase (waves) Optical aberrations law.invention symbols.namesake Optics law Cornea Coeficientes de Zernike medicine Aberraciones ópticas Human eye model Óptica Wavefront Physics Unwrapping Modelo de ojo humano business.industry Zernike coefficients eye diseases Atomic and Molecular Physics and Optics Lens (optics) medicine.anatomical_structure Fresnel integral calculation symbols Human eye sense organs business Optical aberration |
Zdroj: | RUA. Repositorio Institucional de la Universidad de Alicante Universidad de Alicante (UA) |
ISSN: | 1362-3044 0950-0340 |
DOI: | 10.1080/09500340701470011 |
Popis: | In this communication, we report a new method to determine the wavefront aberration function of personalized eyes. We obtain corneal surface data and axial lengths for different eyes. With these data, we construct a diffractive model of a human eye, which permits calculation of propagated light distributions at any distance inside the eye. We obtain the field at the exit of crystalline lens and extract the phase information. To unwrap this phase we use a path-following method and with the reconstructed phase we obtain the wavefront aberration function that we analyze using Zernike polynomials. The method allows linking between field patterns and wavefront surfaces that are softer and easier to analyze. To demonstrate the possibilities of the technique we have chosen five eyes which present different levels of corneal irregularities, from a quasi-spherical cornea to a very deformed one. This work has been supported by the Ministerio de Educación y Ciencia (Spain) through the project no. FIS2005-05053 and by the Conselleria de Empresa, Universitat i Ciència of the Generalitat Valencia (Valencia, Spain), through the project no. ACOMP06/099. |
Databáze: | OpenAIRE |
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