Influence of Stiles-Crawford apodization on visual acuity

David A. Atchison, Dion H. Scott, Niall C. Strang, Pablo Artal

Research output: Contribution to journalArticle

Abstract

The Stiles–Crawford effect (SCE) of the first kind has often been considered to be important to spatial visual performance in that it ameliorates the influence of defocus and aberrations. We investigated the influence of SCE apodization on visual acuity as a function of defocus (out to ±2 D) in four subjects. We used optical filters, conjugate with the eye’s entrance pupil, that neutralized or doubled the existing SCE. With an illiterate-E task, the influence of the SCE was more noticeable for myopic defocus than for hypermetropic defocus, was generally more noticeable for high-contrast than for low-contrast letters, and increased with increase in pupil size. The greatest influence on visual acuity of neutralizing the SCE, across the subjects and range of conditions, was deterioration of 0.06 (4-mm pupil), 0.16 (6-mm pupil), and 0.29 log unit (7.6-mm pupil).

Original languageEnglish
JournalJournal of the Optical Society of America A
DOIs
Publication statusPublished - 1 Jun 2002

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visual acuity
apodization
Optical filters
Aberrations
Deterioration
pupils
pupil size
optical filters
deterioration
entrances
aberration

Keywords

  • apodization
  • Stiles–Crawford effect
  • vision sciences
  • visual acuity

Cite this

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title = "Influence of Stiles-Crawford apodization on visual acuity",
abstract = "The Stiles–Crawford effect (SCE) of the first kind has often been considered to be important to spatial visual performance in that it ameliorates the influence of defocus and aberrations. We investigated the influence of SCE apodization on visual acuity as a function of defocus (out to ±2 D) in four subjects. We used optical filters, conjugate with the eye’s entrance pupil, that neutralized or doubled the existing SCE. With an illiterate-E task, the influence of the SCE was more noticeable for myopic defocus than for hypermetropic defocus, was generally more noticeable for high-contrast than for low-contrast letters, and increased with increase in pupil size. The greatest influence on visual acuity of neutralizing the SCE, across the subjects and range of conditions, was deterioration of 0.06 (4-mm pupil), 0.16 (6-mm pupil), and 0.29 log unit (7.6-mm pupil).",
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author = "Atchison, {David A.} and Scott, {Dion H.} and Strang, {Niall C.} and Pablo Artal",
note = "Originally published in: Journal of the Optical Society of America A (2002), 19 (6), pp.1073-1083.",
year = "2002",
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journal = "Journal of the Optical Society of America A",
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Influence of Stiles-Crawford apodization on visual acuity. / Atchison, David A.; Scott, Dion H.; Strang, Niall C.; Artal, Pablo.

In: Journal of the Optical Society of America A, 01.06.2002.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Influence of Stiles-Crawford apodization on visual acuity

AU - Atchison, David A.

AU - Scott, Dion H.

AU - Strang, Niall C.

AU - Artal, Pablo

N1 - Originally published in: Journal of the Optical Society of America A (2002), 19 (6), pp.1073-1083.

PY - 2002/6/1

Y1 - 2002/6/1

N2 - The Stiles–Crawford effect (SCE) of the first kind has often been considered to be important to spatial visual performance in that it ameliorates the influence of defocus and aberrations. We investigated the influence of SCE apodization on visual acuity as a function of defocus (out to ±2 D) in four subjects. We used optical filters, conjugate with the eye’s entrance pupil, that neutralized or doubled the existing SCE. With an illiterate-E task, the influence of the SCE was more noticeable for myopic defocus than for hypermetropic defocus, was generally more noticeable for high-contrast than for low-contrast letters, and increased with increase in pupil size. The greatest influence on visual acuity of neutralizing the SCE, across the subjects and range of conditions, was deterioration of 0.06 (4-mm pupil), 0.16 (6-mm pupil), and 0.29 log unit (7.6-mm pupil).

AB - The Stiles–Crawford effect (SCE) of the first kind has often been considered to be important to spatial visual performance in that it ameliorates the influence of defocus and aberrations. We investigated the influence of SCE apodization on visual acuity as a function of defocus (out to ±2 D) in four subjects. We used optical filters, conjugate with the eye’s entrance pupil, that neutralized or doubled the existing SCE. With an illiterate-E task, the influence of the SCE was more noticeable for myopic defocus than for hypermetropic defocus, was generally more noticeable for high-contrast than for low-contrast letters, and increased with increase in pupil size. The greatest influence on visual acuity of neutralizing the SCE, across the subjects and range of conditions, was deterioration of 0.06 (4-mm pupil), 0.16 (6-mm pupil), and 0.29 log unit (7.6-mm pupil).

KW - apodization

KW - Stiles–Crawford effect

KW - vision sciences

KW - visual acuity

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DO - 10.1364/JOSAA.19.001073

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JO - Journal of the Optical Society of America A

JF - Journal of the Optical Society of America A

SN - 1084-7529

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