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Biomechanical modeling of pterygium radiation surgery: a retrospective case study

Aebersold, Daniel
Eggspuehler, Andreas
Theler, Frederik
Studer, Harald
Published in Sensors. 2017, vol. 17, no. 6, p. 1200
Abstract Pterygium is a vascularized, invasive transformation on the anterior corneal surface that can be treated by Strontium-/Yttrium90 beta irradiation. Finite element modeling was used to analyze the biomechanical effects governing the treatment, and to help understand clinically observed changes in corneal astigmatism. Results suggested that irradiation-induced pulling forces on the anterior corneal surface can cause astigmatism, as well as central corneal flattening. Finite element modeling of corneal biomechanics closely predicted the postoperative corneal surface (astigmatism error -0.01D; central curvature error -0.16D), and can help in understanding beta irradiation treatment. Numerical simulations have the potential to preoperatively predict corneal shape and function changes, and help to improve corneal treatments.
Keywords PterygiumRadiationCornea surgeryBiomechanicsFinite element modelingSimulation
PMID: 28538668
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Research group Ophtalmologie expérimentale (925)
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PAJIC, Bojan et al. Biomechanical modeling of pterygium radiation surgery: a retrospective case study. In: Sensors, 2017, vol. 17, n° 6, p. 1200. doi: 10.3390/s17061200 https://archive-ouverte.unige.ch/unige:142149

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Deposited on : 2020-09-29

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