Journal of Vision Cover Image for Volume 25, Issue 5
April 2025
Volume 25, Issue 5
Open Access
Optica Fall Vision Meeting Abstract  |   April 2025
Contributed talks II: Sensitivity to temporally modulated defocus for different monochromatic stimuli
Author Affiliations
  • Victor Rodriguez-Lopez
    Institute of Optics, Spanish National Research Council (IO-CSIC), Madrid, Spain
  • Carlos Dorronsoro
    Institute of Optics, Spanish National Research Council (IO-CSIC), Madrid, Spain
Journal of Vision April 2025, Vol.25, 36. doi:https://doi.org/10.1167/jov.25.5.36
  • Views
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      Victor Rodriguez-Lopez, Carlos Dorronsoro; Contributed talks II: Sensitivity to temporally modulated defocus for different monochromatic stimuli. Journal of Vision 2025;25(5):36. https://doi.org/10.1167/jov.25.5.36.

      Download citation file:


      © ARVO (1962-2015); The Authors (2016-present)

      ×
  • Supplements
Abstract

Programmable lenses allow for the measurement of quick changes in optical power. In a previous study we reported the temporal defocus sensitivity function, which measures the just noticeable defocus change for different temporal frequencies for an achromatic stimulus. Here we extend this measurement to different colors. A tunable lens (Optotune) was used to induce temporal defocus variations. An AMOLED display (Waveshare) was used to measure red, green, and blue stimuli with narrow (spectral width at half of 35nm) and separated components (625, 530, 460nm). An achromatic (white on black) stimulus was also measured. All colors were equiluminant. A staircase procedure was used to find the just noticeable defocus change for different temporal frequencies (from 0.5 to 35Hz) using a 4cpd Gabor patch in 3 young subjects. The just noticeable defocus for all temporal frequencies were fit to a model of temporal defocus perception to determine the maximum sensitivity and the defocus critical fusion frequency (DCFF) for each color component. Averaged across subjects, the maximum sensitivity was below 0.1D for each color, with little differences among them. However, the DCFF was lower for blue (22 Hz) and red (26 Hz) stimuli than for green and white (35 and 36Hz, respectively). Red and blue stimuli and white and green stimuli were highly correlated (r2=0.71 and 0.99, respectively). These results are relevant for emerging technologies that make use of temporal changes in optical power.

Footnotes
 Funding: La Caixa Foundation LCF/TR/CI22/52660002 to VRL and CD.
×
×

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.

×