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Static accommodation to filtered polychromatic stimuli

Poster Details

First Author: R. Montes SPAIN

Co Author(s):    J. Esteve-Taboada   A. del Águila-Carrasco   T. Ferrer-Blasco   A. Domínguez           

Abstract Details


To study whether there are significant differences in the accommodative response (AR) of healthy young subjects when they fixate polychromatic targets with different spatial frequencies content.


University of Valencia, Spain


The AR of 6 young healthy subjects was measured using a Shack-Hartmann wavefront sensor. Two different accommodative demands or vergences were considered for this experiment: 2 and 4 Diopters (D). Also, three targets were used in this study. All were based on a fragment of the Picasso’s Guernica. One was a fragment of the normal image, whereas the other two were low-pass filtered versions of the former. The targets were showed to the subjects using a polychromatic microdisplay and the vergences were set using a Badal system.


AR was calculated from the Zernike defocus and the data from all the subjects was averaged. The mean AR when the vergence was set at 2 D was 1.16 ± 0.08, 1.16 ± 0.15 and 1.15 ± 0.10 D, for the normal image, the low-pass filtered image simulating a decimal visual acuity of 0.7 and for the low-pass filtered image simulating a decimal visual acuity of 0.5, respectively. For the same images, and a vergence of 4 D, the results were: 2.93 ± 0.15, 2.95 ± 0.17 and 2.89 ± 0.22 D.


No statistically significant differences in the AR were found between the three different images (p > 0.05), therefore, low-pass filtered images does not seem to have a clear effect on the static accommodation of the eye when using polychromatic stimuli.

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