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Proceedings Paper

Model for photorefractive keratectomy with a scanning beam
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Paper 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.

Paper Details

Date Published: 12 January 1995
PDF: 5 pages
Proc. SPIE 2330, Lasers in Ophthalmology II, (12 January 1995); doi: 10.1117/12.199254
Show Author Affiliations
Fabrice Manns, Univ. of Miami School of Medicine (United States)
Jin-Hui Shen, Univ. of Miami School of Medicine (United States)
Per G. Soederberg, Univ. of Miami School of Medicine (Sweden)
Takaaki Matsui, Univ. of Miami School of Medicine (United States)
Jean-Marie A. Parel, Univ. of Miami School of Medicine (United States)
Hotel Dieu (France)


Published in SPIE Proceedings Vol. 2330:
Lasers in Ophthalmology II
Rosario Brancato; Adolf Friedrich Fercher; Pascal O. Rol; A. S. Melamed, Editor(s)

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