Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Influence of Stiles-Crawford effect apodization on spatial visual performance

D A Atchison1, A Joblin, G Smith

  • 1Centre for Eye Research, School of Optometry, Queensland University of Technology, Australia.

Journal of the Optical Society of America. A, Optics, Image Science, and Vision
|September 8, 1998
PubMed
Summary

The Stiles-Crawford effect minimally impacts spatial vision with centered pupils, offering little compensation for aberrations or defocus. This study questions its role in explaining experimental discrepancies in visual performance.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Spectacle lens design: a review.

Applied optics·2010
Same author

Optimal spherical focus in the peripheral retina.

Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists)·2008
Same author

Tumor contrast in time-domain, near-infrared laser breast imaging.

Applied optics·2008
Same author

Refractive index distribution and optical properties of the isolated human lens measured using magnetic resonance imaging (MRI).

Vision research·2005
Same author

Age-related changes in refractive index distribution and power of the human lens as measured by magnetic resonance micro-imaging in vitro.

Vision research·2002
Same author

The effect of under and over refractive correction on visual performance and spectacle lens acceptance.

Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists)·2001

Area of Science:

  • Optometry and Vision Science
  • Visual Optics
  • Photometry

Background:

  • The Stiles-Crawford effect describes how the perceived brightness of light entering the eye varies with the angle of incidence.
  • It is often cited to reconcile discrepancies between theoretical predictions and experimental findings regarding visual performance, particularly concerning aberrations and defocus.
  • However, its quantitative impact on spatial visual performance, especially in the presence of optical aberrations, remains a subject of investigation.

Purpose of the Study:

  • To model the Stiles-Crawford effect as an apodization.
  • To investigate its influence on spatial visual performance under conditions of primary spherical aberration and defocus.
  • To evaluate the Stiles-Crawford effect's capacity to compensate for optical imperfections in a centered pupil.

Related Experiment Videos

Main Methods:

  • The Stiles-Crawford effect was mathematically modeled as an apodization function.
  • Simulations were performed to assess the effect of a high Stiles-Crawford effect on spatial visual performance.
  • The study considered a 1-diopter primary spherical aberration within a 6-mm diameter centered pupil.

Main Results:

  • The Stiles-Crawford effect induced only minor refractive changes, approximately 0.10 diopters, across various evaluation criteria.
  • Its ability to compensate for defocus and spherical aberration was found to be limited.
  • The overall influence of the Stiles-Crawford effect on spatial visual performance with centered pupils was minimal.

Conclusions:

  • The Stiles-Crawford effect has a negligible impact on spatial visual performance in well-centered pupils.
  • Its capacity to correct for optical aberrations and defocus is insufficient to explain experimental deviations.
  • The reliance on the Stiles-Crawford effect to account for discrepancies between predicted and observed visual performance is not empirically supported for centered pupil conditions.