Changes of ocular aberrations with gaze

Authors

  • P. Prado,

    1. Fisica Aplicada, Universidade de Santiago de Compostela, Santiago de Compostela, A Coruña, Spain
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  • J. Arines,

    1. Escola Universitaria de Óptica y Optometria (Campus Sur), Santiago de Compestela 15782, A Coruña
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  • S. Bará,

    1. Fisica Aplicada, Universidade de Santiago de Compostela, Santiago de Compostela, A Coruña, Spain
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  • S. Manzanera,

    1. Laboratorio de Óptica, Centro de Investigación en Óptica y Nanofísica (CiOyN), Universidad de Murcia, Campus de Espinardo, 30100 Murcia, Spain
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  • A. Mira-Agudelo,

    1. Laboratorio de Óptica, Centro de Investigación en Óptica y Nanofísica (CiOyN), Universidad de Murcia, Campus de Espinardo, 30100 Murcia, Spain
    2. Grupo de Óptica y Fotónica, Instituto de Física, Universidad de Antioquia, A.A. 1226, Medellín, Colombia
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  • P. Artal

    1. Laboratorio de Óptica, Centro de Investigación en Óptica y Nanofísica (CiOyN), Universidad de Murcia, Campus de Espinardo, 30100 Murcia, Spain
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Correspondence and reprint requests to: J. Arines.
Tel.: +34 976 762849; Fax: +34 976 761233.
E-mail address: fajap@unizar.es

Abstract

The dependence of the ocular aberrations on gaze has been studied in three eyes using a fast-acquisition, Hartmann–Shack wavefront sensor. Although there were some trends in the change of some aberration terms with gaze, the changes of most Zernike coefficients were smaller than their variability at each individual gaze position, due to the combined effects of microfluctuations of accommodation, eye movements, tear film dynamics, and measurement noise. For our particular experimental dataset, the confidence level at which the null hypothesis (i.e. that the aberrations do not change significantly with gaze) can be rejected is very low. Further advances in the study of the dependence of eye aberrations with gaze will require a tighter control of the sources of aberration variability at each individual gaze position.

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