An animal model has been developed using enucleated porcine eyes to evaluate ocular trauma. The eyes were pressurized to approximately 18 mmHg and mounted in a container with a 10 % gelatin mixture. The corneas of sixteen pressurized eyes were impacted by a blunt metal projectile (mass of 2.6 gm, 3.5 gm or 45.5 gm) at velocities of 4.0 to 38.1 m/s. The impacted eyes were evaluated by an opthalmologist. A numerical classification scheme was used to categorize the severity of the ocular injury. A chi-squared test indicates that the injury level is associated with the kinetic energy (KE) and not the momentum of the projectile. The enucleated eyes began to experience lens dislocations when the KE of the projectile was approximately 0.75 Nm, and retinal injuries when the KE was approximately 1.20 Nm.
Ocular injuries due to projectile impacts
Augenverletzungen durch Airbags, die geschoßähnliche Wirkung auf das Auge haben
2000
13 Seiten, 3 Bilder, 1 Tabelle, 8 Quellen
Aufsatz (Konferenz)
Englisch
Ocular Injuries Due to Projectile Impacts
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