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06:14
In Vivo Protocol of Controlled Subconcussive Head Impacts for the Validation of Field Study Data
Published on: April 18, 2019
Ocular injuries due to projectile impacts.
W R Scott1, W C Lloyd, J V Benedict
1Biodynamic Research Corporation, San Antonio, Texas, USA.
Annual Proceedings. Association for the Advancement of Automotive Medicine
|September 18, 2001
Summary
This study developed an animal model using porcine eyes to assess ocular trauma. Results show injury severity correlates with projectile kinetic energy, not momentum, aiding trauma research.
Area of Science:
- Ophthalmology
- Biomedical Engineering
- Trauma Research
Background:
- Ocular trauma evaluation requires reliable experimental models.
- Existing models may not accurately replicate blunt force impact dynamics.
Purpose of the Study:
- To develop and validate an enucleated porcine eye model for ocular trauma assessment.
- To determine the relationship between projectile characteristics and injury severity.
Main Methods:
- Enucleated porcine eyes were pressurized and mounted in a gelatin medium.
- Corneal impact was induced using blunt projectiles of varying mass and velocity.
- Ophthalmological evaluation and a numerical injury classification scheme were employed.
Main Results:
- Injury severity was significantly associated with projectile kinetic energy (KE), not momentum.
- Lens dislocation occurred at approximately 0.75 Nm KE.
- Retinal injuries were observed at approximately 1.20 Nm KE.
Conclusions:
- The enucleated porcine eye model effectively simulates ocular trauma.
- Kinetic energy is the primary determinant of injury severity in this model.
- This model provides a quantifiable method for studying blunt ocular trauma.
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