Model for photorefractive keratectomy with a scanning beam

Fabrice Manns, Jinhui Shen, Per G.M.D. Soederberg, Takaaki Matsui, Jean Marie Parel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The optimal values of the parameters of a scanning system for laser corneal surgery are determined by using a computer model. The correction of myopia is simulated. The accuracy of the correction, the smoothness of the corneal surface after ablation, and the time needed for surgery are computed. With a beam diameter of 0.5 mm, an overlap of 60% to 80%, and a 5 mm diameter treatment zone, the simulated error is less than 0.1 Diopter for a correction of 6 Diopters or less; the roughness is less than 7% of the central ablation depth; the number of pulses per Diopter of correction is 2500 if the beam intensity distribution is Gaussian and 580 if the beam intensity distribution is uniform.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsRosario Brancato, Adolf F. Fercher, A.S. Melamed, Pascal O. Rol
Pages88-92
Number of pages5
StatePublished - Dec 1 1995
EventLasers in Ophthalmology II - Lille, Fr
Duration: Sep 9 1994Sep 10 1994

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume2330
ISSN (Print)0277-786X

Other

OtherLasers in Ophthalmology II
CityLille, Fr
Period9/9/949/10/94

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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