This report describes the case of a 10-month-old infant, who was delivered to our hospital by the emergency physician intubated and in an unclear unconscious state. The father reported that the child had fallen from the couch to the ground. The consulted ophthalmologist reported venous stasis in both eyes including intraretinal and preretinal bleeding in all four quadrants, a diffuse vitreous hemorrhage in the right eye and temporal retinal wrinkling in both eyes. Based on these particular clinical findings a shaken baby syndrome was suspected. This report demonstrates the importance of recognizing and correctly interpreting the typical ophthalmological signs of physical child abuse in order to detect and prevent further mistreatment of children; moreover, the increasing importance of photographic documentation and histological work-up of the findings for forensic reasons are emphasized.
The aim of this case study is to generate several poly(ethylene glycol) diacrylate-based hydrogels using additive manufacturing process and compare their material properties. A commercial stereolithography system is used to produce the test specimens in accordance with ISO standards. Three formulations will be prepared for this purpose. The basis in each case is PEGDA with average molecular weights of 700 Mn, 575 Mn and 250 Mn. A photoinitiator and an UV absorber are added to ensure spatial and temporal crosslinking. Subsequently, the formulations are investigated for their material properties according to ISO standards by means of tensile, compression and hardness tests, and the influence of the molecular weights is determined.
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