Accession Number : ADA610937


Title :   Sub-lethal Ocular Trauma (SLOT): Establishing a Standardized Blast Threshold to Facilitate Diagnostic, Early Treatment, and Recovery Studies for Blast Injuries to the Eye and Optic Nerve


Descriptive Note : Annual rept. 15 Aug 2012-15 Aug 2013


Corporate Author : TEXAS UNIV AT SAN ANTONIO


Personal Author(s) : Gray, Walt ; Reilly, Matthew ; Lund, Brian J ; Sponsel, William E ; Glickman, Randolph D


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a610937.pdf


Report Date : Sep 2013


Pagination or Media Count : 60


Abstract : The report summarizes the results of tasks undertaken during Year 1 of the project Sub-lethal Ocular Trauma (SLOT): Establishing a Standardized Blast Threshold to Facilitate Diagnostic, Early Treatment, and Recovery Studies for Blast Injuries to the Eye and Optic Nerve. The 3 year effort aims to fill a gap in our understanding of physical mechanisms and progression of primary blast-induced ocular injury. A fully-integrated experimental and computational study was undertaken. Primary blast experiments were conducted using a large diameter shock tube and ex vivo porcine eye specimens. The experiments were supported by numerical modeling using physics-based codes CTH and LS-DYNA. Post-blast evaluation of eye specimens using UBM and B-scan, as well as gross dissection and detailed histopathology, allowed for preliminary development of trauma risk curves for a number of sub-globe-rupture trauma categories. The data generated in this study has increased our understanding of primary blast-induced ocular trauma. The shock tube produced a broad array of closed-globe injuries such as angle recession, cyclodialysis, peripheral chorioretinal detachments, radial peripapillary retinal detachments, and internal scleral delaminations. Development of a rigorous experimental methodology and use of pre-blast ultrasound screening gave confidence that the observed injuries were due to the effects of primary blast.


Descriptors :   *EYE , *OPTIC NERVE , *WOUNDS AND INJURIES , BLAST , DIAGNOSIS(MEDICINE) , MODELS , PATHOLOGY , RETINA , SHOCK TUBES , TRAUMA


Subject Categories : Anatomy and Physiology
      Medicine and Medical Research
      Weapons Effects(biological)


Distribution Statement : APPROVED FOR PUBLIC RELEASE