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  5. The impact of aberrations in a 3D retinal model eye
 
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The impact of aberrations in a 3D retinal model eye

File(s)
FileDescriptionSizeFormat
Download SPIE San Diego Vohnsen submit 2021 repository.pdf411.12 KB
Author(s)
Vohnsen, Brian 
Uri
http://hdl.handle.net/10197/13055
Date Issued
05 August 2021
Date Available
15T15:55:22Z August 2022
Abstract
Aberrations of the eye degrade the ocular point-spread function thereby reducing the attainable visual acuity. It is common practice to distinguish between lower and higher-order monochromatic aberrations of the eye when differentiating between what can be corrected with sphere and cylinder, and what cannot. Nevertheless, at the retina it matters more whether light is incident along or obliquely onto the elongated photoreceptors. In this contribution, I discuss the impact of different Zernike aberration terms not at the pupil, but at the retina. Even-ordered monochromatic Zernike aberrations have an associated wavefront slope at the retina whereas odd-ordered Zernike aberration modes have no wavefront tilt across the point-spread function. In other words, even and odd-ordered Zernike modes are affected differently by the Stiles-Crawford effect of the first kind that relates to obliqueness of light at the retina. Understanding this is essential to decode how vision is triggered in normal viewing conditions as well as when probing vision and photoreceptors with psychophysical methods in the analysis of vision or for ophthalmic design. Finally, a uniaxial pupil flicker system is used to directly measure the integrated Stiles-Crawford effect in the author’s eye in order to assess apodization of oblique light in normal vision.
Type of Material
Conference Publication
Publisher
SPIE
Copyright (Published Version)
2021 Society of Photo‑Optical Instrumentation Engineers (SPIE)
Keywords
  • Stiles-Crawford effec...

  • Cone photoreceptors

  • Aberrations

  • Zernike polynomials

  • Point-spread function...

  • Visual acuity

DOI
10.1117/12.2594117
Dataset(s)
https://spie.org/x30579.xml
Language
English
Status of Item
Peer reviewed
Part of
Johnson, R.B., Mahajan, V.N. and Thibault, S. (eds.). Current Developments in Lens Design and Optical Engineering XXI
Description
SPIE Optics+Photonics 2021, Online Event, 1-5 August 2021
ISBN
9781510644663
ISSN
0277-786X
This item is made available under a Creative Commons License
https://creativecommons.org/licenses/by-nc-nd/3.0/ie/
Owning collection
Physics Research Collection
Scopus© citations
0
Acquisition Date
Jan 28, 2023
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