English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/8582
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 43 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar bibText (RIS)Exportar csv (RIS)
Título

Effects of interactions among wave aberrations on optical image quality

AutorMcLellan, J. S.; Prieto, P. M.; Marcos, Susana ; Burns, Stephen A.
Palabras claveWave aberrations
Optical quality
Monte Carlo simulation
Fecha de publicación12-may-2006
EditorElsevier
CitaciónVision Research 46(18): 3009-3016 (2006)
ResumenWave aberrations degrade the optical quality of the eye relative to the diffraction limit, but there are situations in which having slightly aberrated optics can provide some relative visual benefits. This fact led us to consider whether interactions among aberrations in the eye’s wavefront produce an advantage for image quality relative to wavefronts with randomized combinations of aberrations with the same total RMS error. Total ocular wave aberrations from two experimental groups and corneal wave aberrations from one group were measured and expressed as Zernike polynomial expansions through the seventh-order. In a series of Monte Carlo simulations, modulation transfer functions (MTFs) for the measured wave aberrations were compared to distributions of artificial MTFs for wavefronts created by randomizing the sign or orientation of the aberrations, while maintaining the RMS error within each Zernike order. In a control condition, "synthetic" model eyes were produced by choosing each individual aberration term at random from individuals in the experimental group, and again MTFs were compared for original and randomized signs. Results were summarized by the MTF ratio: real MTF/mean simulated MTF, as a function of spatial frequency. For a 6 mm pupil, the mean MTF ratio for total ocular aberrations was greater than 1.0 up to 60 cycles per degree, suggesting that the eye’s aberrations are not independent and that there may be a positive functional consequences to their interrelations. This positive relation did not hold for corneal aberrations alone, or for the synthetic eyes.
Descripción8 pages, 7 figures.-- PMID: 16697435 [PubMed].-- Printed version published on Sep 2006.
Versión del editorhttp://dx.doi.org/10.1016/j.visres.2006.03.005
URIhttp://hdl.handle.net/10261/8582
DOI10.1016/j.visres.2006.03.005
ISSN0042-6989
Aparece en las colecciones: (CFMAC-IO) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo
 



NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.