September 2023
Volume 23, Issue 11
Open Access
Optica Fall Vision Meeting Abstract  |   September 2023
Poster Session: Perceived image quality of natural images through different bifocal corrections after adaptation to sharp or blur.
Author Affiliations
  • Eduardo Esteban-Ibañez
    Institute of Optics (CSIC)/ 2EyesVision SL
  • Enrique Gambra
    2EyesVision SL
  • Yassine Marrakchi
    2EyesVision SL
  • Lucie Sawides
    2EyesVision SL
  • Carlos Dorronsoro
    Institute of Optics (CSIC)/ 2EyesVision SL
Journal of Vision September 2023, Vol.23, 49. doi:
  • Views
  • Share
  • Tools
    • Alerts
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      Eduardo Esteban-Ibañez, Enrique Gambra, Yassine Marrakchi, Lucie Sawides, Carlos Dorronsoro; Poster Session: Perceived image quality of natural images through different bifocal corrections after adaptation to sharp or blur.. Journal of Vision 2023;23(11):49.

      Download citation file:

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

  • Supplements

Simultaneous Vision, present in bifocal and multifocal contact or intraocular lenses, is a common clinical strategy for presbyopia. Neural adaptation is known to occur, but it is not predictable nor well understood. Previous works have studied the short-term neural adaptation to bifocal images using Adaptive Optics and digital convolutions of a face image (with pure defocus and simultaneous images) as adaptation images, and also as test images for perceptual judgments (Radhakrishnan et al., 2014). In this study, we use a programmable see-through head-mounted visual simulator (SimVis Gekko) to analyze the effect of neural adaptation on the perceived image quality of different bifocal corrections (BC) with different balances of energy between far and near, and for different transitions between adaptation and test. Eight subjects judged a video sequence of urban natural images, through two monofocal corrections (0 and 3D) and nine BCs (far/near balance from 90/10 to 10/90 and an addition of 3.00D), optically simulated monocularly. Two initial adaptation states of 10s were used: 0.00D-SHARP and 3.00D-BLUR, followed a transition from these states to the BC that can be ABRUPT (with 1, 5 or 30s of adaptation), or SMOOTH (linear transition lasting 1, 5 or 30s). Our results show a significant increase in perceptual quality after adaptation to BLUR, particularly for intermediate energy balances. However, subjects are quite insensitive to the type and duration of the transition.

 Funding: Funding: Industrial PhD Grant (Comunity of Madrid) IND2020/BMD-17442

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.