Biomechanical Modeling of Human Eye in Blunt Impact: A Finite Element Study

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Rahmannia, Saeed | 2017

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 49763 (08)
University: Sharif University of Technology
Department: Mechanical Engineering
Advisor(s): Ahmadian, Mohammad taghi; Fallah Rajabzadeh, Famida
Abstract:
Nowadays, Eye injuries caused by blunt impacts are considered among the major causes of blindness and vision problems; therefore, studying the existence of possible damages can be quite useful and effective. One of the quickest and most suitable methods in identifying damage parameters is finite-element modeling of the human eye. In this regard, in the current study, first a geometrical design was created by incorporating CT-Scan images of the eye into Mimics and later Solid works software. Afterwards, the most suitable mechanical properties for the constituents of the eye were extracted from the literature. The mechanical properties of vitreous and Sclera were obtained by experimental tests. Subsequently, the finite element software, ABAQUS, was used to study the eye’s behavior in response to several impact types (baseball and steel bullet). the baseball impact results showed that, as previously obtained by experiments in the literature, due to the impact with velocities of 34 and 24 m/s, the eye experiences fracture 0.28 and 0.4 seconds, respectively after the impact
Keywords:
Finite Element Analysis ; Biomechanical Modeling ; Eyes ; Blunt Impacts ; Eye Injuries

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