Conflict/competing interest: No stated conflict of interest.
Experimental measure of retinal impact force resulting from intraocular foreign body dropped onto retina through media of differing viscosity
Article first published online: 14 DEC 2012
© 2012 The Authors. Clinical and Experimental Ophthalmology © 2012 Royal Australian and New Zealand College of Ophthalmologists
Clinical & Experimental Ophthalmology
Volume 41, Issue 5, pages 471–475, July 2013
How to Cite
Ernst, B. J., Velez-Montoya, R., Kujundzic, D., Kujundzic, E. and Olson, J. L. (2013), Experimental measure of retinal impact force resulting from intraocular foreign body dropped onto retina through media of differing viscosity. Clinical & Experimental Ophthalmology, 41: 471–475. doi: 10.1111/ceo.12036
Funding sources: No stated funding sources.
- Issue published online: 25 JUN 2013
- Article first published online: 14 DEC 2012
- Accepted manuscript online: 13 NOV 2012 03:39AM EST
- Manuscript Accepted: 16 SEP 2012
- Manuscript Received: 25 JUL 2012
- impact force;
- intraocular foreign body;
- retained foreign body;
To evaluate and compare the perfluorocarbon liquid, silicone oil, and viscoelastic against standard saline, in their ability to dampen the impact force of a foreign body, dropped within the eye. In an experimental surgical model in where cohesive and adhesive forces of the substances are not enough to float heavy-than-water foreign bodies.
A model of ophthalmic surgery was constructed. A BB pellet was dropped from 24 mm onto a force transducer through four different fluids: balanced salt solution, perfluoro-n-octane, viscoelastic, and silicone oil. The impact energy (force) for each case was measured and recorded by the force transducer. The mean force of impact for each fluid was compared using the Student t-test.
Silicone oil resulted in the lowest force of impact. Both silicone oil and viscoelastic dampened the impact an order of magnitude more than perfluoro-n-octane and balanced salt solution.
Silicone oil and viscoelastic cushioned the force from a dropped BB. They may be useful adjuncts to prevent iatrogenic retinal injury during vitrectomy for intraocular foreign body removal.