December 2002
Volume 2, Issue 10
Free
OSA Fall Vision Meeting Abstract  |   December 2002
The effect of spherical aberration in myopic and non-myopic eyes: developing an optical model
Author Affiliations
  • Richard Calver
    Department of Optometry & Ophthalmic Dispensing, Anglia Polytechnic University, Cambridge, UK
  • Hema Radhakrishnan
    Department of Optometry & Ophthalmic Dispensing, Anglia Polytechnic University, Cambridge, UK
  • Shahina Pardhan
    Department of Optometry & Ophthalmic Dispensing, Anglia Polytechnic University, Cambridge, UK
  • Daniel OLeary
    Department of Optometry & Ophthalmic Dispensing, Anglia Polytechnic University, Cambridge, UK
Journal of Vision December 2002, Vol.2, 29. doi:10.1167/2.10.29
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      Richard Calver, Hema Radhakrishnan, Shahina Pardhan, Daniel OLeary; The effect of spherical aberration in myopic and non-myopic eyes: developing an optical model. Journal of Vision 2002;2(10):29. doi: 10.1167/2.10.29.

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Abstract

Myopes have an altered accommodation response compared to non-myopes. We examined the possible optical causes of this effect by developing theoretical models of modulation transfer functions in the presence of spherical aberration and spherical defocus. In addition, we compared the contrast sensitivity functions of myopes and non-myopes under conditions of defocus, and analysed the contrast sensitivity decrease. We found that the introduction of defocus led to a significantly different contrast sensitivity response in myopes compared to non-myopes. This result was compared to possible difference in levels of spherical aberration in these two groups. The possible interactions of spherical aberration and defocus will be discussed, with emphasis on the results of recent measurements of the aberrations of myopic and emmetropic eyes.

Calver, R., Radhakrishnan, H., Pardhan, S., OLeary, D.(2002). The effect of spherical aberration in myopic and non-myopic eyes: developing an optical model [Abstract]. Journal of Vision, 2( 10): 29, 29a, http://journalofvision.org/2/10/29/, doi:10.1167/2.10.29. [CrossRef]
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