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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 5, Iss. 14 — Nov. 16, 2010

Theoretical analysis of wavefront aberration from treatment decentration with oblique incidence after conventional laser refractive surgery

Fang Lihua, He Xingdao, and Chen Fengying  »View Author Affiliations

Optics Express, Vol. 18, Issue 21, pp. 22418-22431 (2010)

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Analysis of induced wavefront aberration after refractive surgery is important in the design of vision correction and the development of visual correction technology. Based on a mathematical model of the anterior corneal surface, the influence of treatment decentration on induced wavefront aberrations was studied by considering oblique incidence. The results revealed that significant coma was induced from the treatment translation, and it was nearly proportional to the translation or corrected refraction of vision correction. The induced aberrations from the lateral translation correlated with the angle formed by the position vector and the astigmatism axis of myopia astigmatism correction. The induced spherical aberration did not relate to a lateral translation of the center of the pupil, but was determined only by the corrected refraction. Additionally, no significant higher-order aberrations were induced from eye cyclotorsion for pure myopia or myopia astigmatism correction. Oblique incidence played an important role in the impact of treatment decentration on the induced aberrations in refractive surgery. The induced coma without considering the oblique incidence was obviously larger than that with it. In order to achieve the best postoperative visual performance, the effect of oblique incidence in refractive surgery should be taken into account, and treatment decentration should be minimized by all means, particularly for high myopia.

© 2010 OSA

OCIS Codes
(170.0170) Medical optics and biotechnology : Medical optics and biotechnology
(170.1020) Medical optics and biotechnology : Ablation of tissue

ToC Category:
Medical Optics and Biotechnology

Original Manuscript: May 5, 2010
Revised Manuscript: July 12, 2010
Manuscript Accepted: September 12, 2010
Published: October 8, 2010

Virtual Issues
Vol. 5, Iss. 14 Virtual Journal for Biomedical Optics

Fang Lihua, He Xingdao, and Chen Fengying, "Theoretical analysis of wavefront aberration from treatment decentration with oblique incidence after conventional laser refractive surgery," Opt. Express 18, 22418-22431 (2010)

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