Accommodative stimulus-response curves to low-pass filtered natural images

Purpose To assess how the monocular steady-state accommodative stimulus-response curve is modified when viewing low-pass filtered natural images. Methods Eighteen adult subjects participated in the study. The accommodative stimulus-response curve was objectively assessed by means of a Hartmann-Shack...

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Bibliographic Details
Published in:Graefe's archive for clinical and experimental ophthalmology 2018-09, Vol.256 (9), p.1731-1737
Main Authors: Esteve-Taboada, José J., Bernal-Molina, Paula, Montés-Micó, Robert, Ferrer-Blasco, Teresa
Format: Article
Language:English
Subjects:
Frequency dependence
Low Vision
Medicine
Medicine & Public Health
Ophthalmology
Visual task performance
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Summary:Purpose To assess how the monocular steady-state accommodative stimulus-response curve is modified when viewing low-pass filtered natural images. Methods Eighteen adult subjects participated in the study. The accommodative stimulus-response curve was objectively assessed by means of a Hartmann-Shack wavefront sensor. Measurements were taken at different accommodative demands. Target images were low-pass filtered versions of a natural image that were obtained applying different digital spatial filters that limited the spatial frequency content of the natural image. Cutoff spatial frequencies were set at 30, 21, and 15 cycles per degree (cy/deg). Results Mean data obtained for each target were fitted to linear models. For the low-pass filtered natural image with a cutoff spatial frequency at 30 cy/deg, the slope for the averaged stimulus-response curve was 0.614, while the slopes obtained for the other two low-pass filtered images corresponding to cutoff frequencies at 21 and 15 cy/deg were 0.613 and 0.619, respectively ( p  
ISSN:0721-832X
1435-702X
DOI:10.1007/s00417-018-3983-z