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Simulation model of an eyeball based on finite element analysis on a supercomputer
1Department of Ophthalmology, Yokohama City University School of Medicine, Yokohama, Japan.
The British Journal of Ophthalmology
|September 30, 1999
Summary
This study developed a finite element analysis model to simulate intraocular foreign body injuries. The model predicts critical missile sizes causing corneal or scleral rupture, aiding protective measure development.
Area of Science:
- Ophthalmology
- Biomechanical Engineering
- Computational Science
Background:
- Intraocular foreign body (IOFB) injuries pose significant risks.
- Understanding the biomechanics of ocular trauma is crucial for prevention.
- Existing models lack detailed mechanical condition analysis for IOFB injuries.
Purpose of the Study:
- To develop and validate a finite element analysis (FEA) model of the human eye.
- To determine the physical and mechanical conditions leading to intraocular foreign body injuries.
- To simulate the impact of foreign bodies on ocular structures.
Main Methods:
- Developed a 3D solid model of the human eye using Hypermesh.
- Created a finite element mesh based on cadaver eye data.
- Simulated blunt missile impacts using the FEA program PAM-CRASH.
Main Results:
- Corneal rupture occurred with missile sizes of 1.95 mm (30 m/s) and 0.82 mm (60 m/s).
- Scleral rupture occurred with missile sizes of 0.95 mm (30 m/s) and 0.75 mm (60 m/s).
- Simulations analyzed rupture thresholds based on strain and stress parameters.
Conclusions:
- The FEA model shows potential for simulating ocular injuries.
- The model can provide valuable data for developing protective measures.
- This research aids in preventing industrial and traffic-related eye injuries.