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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 1 — Jan. 10, 2005
  • pp: 336–343

Correction factor for ablation algorithms used in corneal refractive surgery with gaussian-profile beams

José Ramón Jiménez, Rosario González Anera, Luis Jiménez del Barco, Enrique Hita, and Francisco Pérez-Ocón  »View Author Affiliations


Optics Express, Vol. 13, Issue 1, pp. 336-343 (2005)
http://dx.doi.org/10.1364/OPEX.13.000336


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Abstract

We provide a correction factor to be added in ablation algorithms when a Gaussian beam is used in photorefractive laser surgery. This factor, which quantifies the effect of pulse overlapping, depends on beam radius and spot size. We also deduce the expected post-surgical corneal radius and asphericity when considering this factor. Data on 141 eyes operated on LASIK (laser in situ keratomileusis) with a Gaussian profile show that the discrepancy between experimental and expected data on corneal power is significantly lower when using the correction factor. For an effective improvement of post-surgical visual quality, this factor should be applied in ablation algorithms that do not consider the effects of pulse overlapping with a Gaussian beam.

© 2005 Optical Society of America

OCIS Codes
(170.1020) Medical optics and biotechnology : Ablation of tissue
(170.4470) Medical optics and biotechnology : Ophthalmology

ToC Category:
Research Papers

History
Original Manuscript: November 18, 2004
Revised Manuscript: December 30, 2004
Manuscript Accepted: January 4, 2005
Published: January 10, 2005

Citation
José Ramón Jiménez, Rosario González Anera, Luis Jiménez del Barco, Enrique Hita, and Francisco Pérez-Ocón, "Correction factor for ablation algorithms used in corneal refractive surgery with gaussian-profile beams," Opt. Express 13, 336-343 (2005)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-13-1-336


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References

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