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Experiments on PMMA models to predict the impact of corneal refractive surgery on corneal shape

AuthorsDorronsoro, Carlos ; Cano, Daniel; Merayo-Lloves, Jesús; Marcos, Susana
Keywords[OCIS] Instrumentation, measurement, and metrology: Surface measurements, figure
[OCIS] Lasers and laser optics: Laser materials processing
[OCIS] Medical optics and biotechnology: Ablation of tissue
[OCIS] Medical optics and biotechnology: Medical optics instrumentation
[OCIS] Vision, color and visual optics: Ophthalmic optics and devices
[OCIS] Vision, color and visual optics: Physiological optics
Refractive surgery
PMMA models
Issue Date26-Jun-2006
PublisherOptical Society of America
CitationOptics Express 14(13): 6142-6156 (2007)
AbstractFlat and spherical PMMA surfaces were ablated with a standard refractive surgery laser system. The ratio of profiles on flat to spherical PMMA surfaces was used to estimate experimentally the radial change in ablation efficiency for PMMA and cornea. Changes in ablation efficiency accounted for most of the asphericity increase found clinically, using the same laser system. This protocol is useful to obtain a correction factor for any ablation algorithm and laser system, and to estimate the contribution of biomechanics to the increase of corneal asphericity in myopic refractive surgery.
Description15 pages, 9 figures.-- OCIS codes: 120.6650, 140.3390, 170.1020, 170.3890, 330.4460, 330.5370.
Publisher version (URL)http://dx.doi.org/10.1364/OE.14.006142
Appears in Collections:(CFMAC-IO) Artículos
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