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Population distribution of wavefront aberrations in the peripheral human eye
KTH, School of Engineering Sciences (SCI), Applied Physics, Biomedical and X-ray Physics.ORCID iD: 0000-0002-4894-7944
KTH, School of Engineering Sciences (SCI), Applied Physics, Biomedical and X-ray Physics.ORCID iD: 0000-0001-9172-858X
2009 (English)In: Optical Society of America. Journal A: Optics, Image Science, and Vision, ISSN 1084-7529, E-ISSN 1520-8532, Vol. 26, no 10, 2192-2198 p.Article in journal (Refereed) Published
Abstract [en]

We present a population study of peripheral wavefront aberrations in large off-axis angles in terms of Zernike coefficients. A laboratory Hartmann-Shack sensor was used to assess the aberrations in 0 degrees, 20 degrees, and 30 degrees in the nasal visual field of 43 normal eyes. The elliptical pupil meant that the quantification could be done in different ways. The three approaches used were (1) over a circular aperture encircling the pupil, (2) over a stretched version of the elliptical pupil, and (3) over a circular aperture within the pupil (MATLAB conversion code given). Astigmatism (c(2)(2)) increased quadratically and coma (c(3)(1)) linearly with the horizontal viewing angle, whereas spherical aberration (c(4)(0)) decreased slightly toward the periphery. There was no correlation between defocus and angle, although some trends were found when the subjects were divided into groups depending on refractive error. When comparing results of different studies it has to be kept in mind that the coefficients differ depending on how the elliptical pupil is taken into consideration.

Place, publisher, year, edition, pages
2009. Vol. 26, no 10, 2192-2198 p.
Keyword [en]
monochromatic aberrations, visual-field, image quality, zernike, coefficients, optical-system, refraction
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:kth:diva-18822DOI: 10.1364/JOSAA.26.002192ISI: 000270378300014PubMedID: 19798398Scopus ID: 2-s2.0-70349686434OAI: oai:DiVA.org:kth-18822DiVA: diva2:336869
Note
QC 20100525 QC 20120210Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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Lundström, LindaUnsbo, Peter

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