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BioMed Research International
Volume 2017, Article ID 6073059, 10 pages
https://doi.org/10.1155/2017/6073059
Research Article

Anisotropic Finite Element Modeling Based on a Harmonic Field for Patient-Specific Sclera

1Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
2School of Information Science and Engineering, Central South University, Changsha, Hunan 410083, China

Correspondence should be addressed to Xuanchu Duan; moc.621@uhcxnaud

Received 14 September 2016; Revised 3 December 2016; Accepted 21 December 2016; Published 7 February 2017

Academic Editor: Jose M. González-Meijome

Copyright © 2017 Xu Jia et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Purpose. This study examined the influence of anisotropic material for human sclera. Method. First, the individual geometry of patient-specific sclera was reproduced from a laser scan. Then, high quality finite element modeling of individual sclera was performed using a convenient automatic hexahedral mesh generator based on harmonic field and integrated with anisotropic material assignment function. Finally, comparison experiments were designed to investigate the effects of anisotropy on finite element modeling of sclera biomechanics. Results. The experimental results show that the presented approach can generate high quality anisotropic hexahedral mesh for patient-specific sclera. Conclusion. The anisotropy shows significant differences for stresses and strain distribution and careful consideration should be given to its use in biomechanical FE studies.