A finite element infant eye model to investigate retinal forces in shaken baby syndrome

Abstract

The results suggest that shaking alone may be enough to cause retinal hemorrhaging, as there are more sustained and higher forces in the posterior retina, compared to an impact due to a fall. This is in part due to the optic nerve causing more localized stresses in a shaking motion than an impact.

Non‐Sexual Abuse in Children

“…frontal, occipital, corpus callosum, and connections of brainstem and cerebrum/cerebellum) and found a capacity for SDH from central bridging vein rupture Hans et al 2009 A computational model of an infant eye using an FEM with a four-cycle shaking motion in 1 s and maximum flexion/ extension of the neck…”

Age-related changes in dynamic moduli of ovine vitreous

“…Finite element (FE) analysis is a valuable computational tool that provides insight into the responses of an eye during trauma. Many FE models exist for investigating ocular injury and pathologies of the adult eye (Amini et al, 2011;Djilas et al, 2011;Girard et al, 2011;Kasi et al, 2011;Nguyen and Boyce, 2011;Opie et al, 2010;Power et al, 2002;Rossi et al, 2011;Roy and Dupps, 2011;Sigal, 2011;Uchio et al, 2004Uchio et al, , 1999Weaver et al, 2011;Yang et al, 2009), but only two FE models exist for pediatric ocular research (Hans et al, 2009;Rangarajan et al, 2009). Both of these models utilize adult material properties, many of which were tested at quasistatic rates, and are likely to be a misrepresentation of the pediatric ocular mechanical response to trauma.…”

Prediction of globe rupture caused by primary blast: a finite element analysis

“…Stitzel et al (2002) predicted globe rupture caused by blunt impact using finite element analysis, which was validated by 22 matched experiments. There have been more recent simulation studies conducted on ocular injuries related to lens injury (Stitzel et al 2005), optic nerve damage (Cirovic et al 2006), globe rupture after PRK and LASIK (Mousavi et al 2012), retinal damage in abusive head trauma (Hans et al 2009;Rangarajan et al 2009) and traumatic retinal detachment (Rossi et al 2011;Liu et al 2013). The current work aimed to develop a blast event model with an implanted eye to predict globe rupture caused by primary blast effects.…”