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Título

Comparison of real and computer-simulated outcomes of LASIK refractive surgery

AutorCano, Daniel; Barbero, Sergio ; Marcos, Susana
Palabras claveLaser in situ keratomileusis (LASIK)
Refractive Surgery
Computational models
[OCIS] Atmospheric and oceanic optics: Wave-front sensing
[OCIS] Medical optics and biotechnology: Ophthalmology
[OCIS] Vision, color, and visual optics: Vision system - noninvasive assessment
[OCIS] Vision, color, and visual optics: Physiological optics
Fecha de publicaciónjun-2004
EditorOptical Society of America
CitaciónJournal of the Optical Society of America A 21(6): 926-936 (2004)
ResumenComputer simulations of alternative LASIK ablation patterns were performed for corneal elevation maps of 13 real myopic corneas (range of myopia, -2.0 to -11.5 D). The computationally simulated ablation patterns were designed with biconic surfaces (standard Munnerlyn pattern, parabolic pattern, and biconic pattern) or with aberrometry measurements (customized pattern). Simulated results were compared with real postoperative outcomes. Standard LASIK refractive surgery for myopia increased corneal asphericity and spherical aberration. Computations with the theoretical Munnerlyn ablation pattern did not increase the corneal asphericity and spherical aberration. The theoretical parabolic pattern induced a slight increase of asphericity and spherical aberration, explaining only 40% of the clinically found increase. The theoretical biconic pattern controlled corneal spherical aberration. Computations showed that the theoretical customized pattern can correct high-order asymmetric aberrations. Simulations of changes in efficiency due to reflection and nonnormal incidence of the laser light showed a further increase in corneal asphericity. Consideration of these effects with a parabolic pattern accounts for 70% of the clinical increase in asphericity.
Descripción11 pages, 10 figures.-- OCIS codes: 330.4300, 330.5370, 170.4470, 010.7350.-- PMID: 15191172 [PubMed].
Versión del editorhttp://dx.doi.org/10.1364/JOSAA.21.000926
URIhttp://hdl.handle.net/10261/8643
DOI10.1364/JOSAA.21.000926
ISSN1084-7529
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