English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/8559
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 35 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

Influence of adaptive-optics ocular aberration correction on visual acuity at different luminances and contrast polarities

Autor Marcos, Susana ; Sawides, Lucie; Gambra, Enrique; Dorronsoro, Carlos
Palabras clave Adaptive optics (AO)
Ocular aberrations
Psychophysics
Visual acuity
Luminance
Contrast polarity
Fecha de publicación 6-oct-2008
EditorAssociation for Research in Vision and Ophthalmology
Citación Journal of Vision 8(13): 1-12 (2008)
ResumenWe evaluated the visual benefit of correcting astigmatism and high-order aberrations with adaptive optics (AO) on visual acuity (VA) measured at 7 different luminances (ranging from 0.8 to 50 cd/m2) and two contrast polarities (black letters on white background, BoW, and white letters on black background, WoB) on 7 subjects. For the BoW condition, VA increased with background luminance in both natural and AO-corrected conditions, and there was a benefit of AO correction at all luminances (by a factor of 1.29 on average across luminances). For WoB VA increased with foreground luminance but decreased for the highest luminances. In this reversed polarity condition AO correction increased VA by a factor of 1.13 on average and did not produce a visual benefit at high luminances. The improvement of VA (averaged across conditions) was significantly correlated (p = 0.04) with the amount of corrected aberrations (in terms of Strehl ratio). The improved performance with WoB targets with respect to BoW targets is decreased when correcting aberrations, suggesting a role of ocular aberrations in the differences in visual performance between contrast polarities.
Descripción 12 pages, 10 figures.
Versión del editorhttp://journalofvision.org/8/13/1/
URI http://hdl.handle.net/10261/8559
DOI10.1167/8.13.1
ISSN1534-7362
Aparece en las colecciones: (CFMAC-IO) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Marcos-2008-jov-8-13-1.pdf1,3 MBAdobe PDFVista previa
Visualizar/Abrir
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.