Blunt Trauma Impact Study

Among annually 2.4 million eye injuries in the United States, 40,000-60,000 of them trigger blindness as a consequence of Blunt Trauma Impact (BTI). The injury as a result of BTI to the eye could be minimized if and only if the process and detail of that were thoroughly available. Numerical models, such as Finite Element (FE), might be applicable since experimental measurements on the detail of injury in each component of the eye is almost impossible. In this study, in order to understand the detail of injury as a result of BTI to the eye, a computational Fluid-Structure Interaction (FSI) model of the eye was proposed. To have a suitable as well as trustable eye model, the mechanical properties of the eye components as well as the experimental validity of the model are deemed important. To do that, a set of CT/MRI images were taken from the human eye and were analyzed using the commercial software. Thereafter, the FE model of the human eye including all its components were established. The mechanical properties of all the components, excluding the sclera, were extracted …show more content…
Tennis ball due to its relatively high speed (69 m/s) can be considered as one of the most severe forms of BTIs following by a substantial injury to the eye. Although the results in this regard due to the lack of experimental outcomes could not be verified, the highest amount of stress was observed in the cornea whereas the lowest one was seen in the vitreous body. The stress in the cornea was higher than that of its elastic range while lower than that of its failure stress. This study could propose a suitable anatomical-based eye model with proper mechanical properties as well as set of experimental and numerical verifications. The model can be employed to shed light on the detail of injury of all the eye components as a consequence of various types of