Volumetric integration model of the Stiles-Crawford effect of the first kind and its experimental verification

The integrated Stiles-Crawford function is commonly used as apodization model for vision through the natural eye pupil. However, this method does not account for possible effects related to the retinal thickness, the large length-to-diameter aspect ratio of the photoreceptors, or the use of nonMaxwe...

Full description

Saved in:
Bibliographic Details
Published in:Journal of vision (Charlottesville, Va.) Va.), 2017-10, Vol.17 (12), p.18-18
Main Authors: Vohnsen, Brian, Carmichael, Alessandra, Sharmin, Najnin, Qaysi, Salihah, Valente, Denise
Format: Article
Language:English
Subjects:
Humans
Light
Lighting
Models, Biological
Models, Neurological
Optics and Photonics - methods
Psychophysics
Pupil - physiology
Retina - physiology
Retinal Pigments - physiology
Vision, Ocular - physiology
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The integrated Stiles-Crawford function is commonly used as apodization model for vision through the natural eye pupil. However, this method does not account for possible effects related to the retinal thickness, the large length-to-diameter aspect ratio of the photoreceptors, or the use of nonMaxwellian illumination. Here, we introduce a geometrical optics model to calculate the fraction of overlap between light at the retina and the photoreceptor outer segments where absorption triggers vision. The model, which does not account for photoreceptor waveguiding, is discussed for both Maxwellian and nonMaxwellian illumination. The integrated Stiles-Crawford effect is analyzed experimentally with a uniaxial pupil-size flicker methodology and we find that the psychophysical measurements match better to the geometrical optics predictions than direct integration of a Stiles-Crawford function.
ISSN:1534-7362
1534-7362
DOI:10.1167/17.12.18