Document Detail

Experimental measure of retinal impact force resulting from intraocular foreign body dropped onto retina through media of differing viscosity.
MedLine Citation:
PMID:  23145546     Owner:  NLM     Status:  Publisher    
BACKGROUND: To evaluate and compare perfluorocarbon liquid, silicone oil, and viscoelastic to standard saline for 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. METHODS: 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. RESULTS: 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. CONCLUSIONS: Silicone oil and viscoelastic cushioned the force from a dropped BB. They may be useful adjuncts to prevent iatrogenic retinal injury during vitrectomy for IOFB removal.
Benjamin J Ernst; Raul Velez-Montoya; Damir Kujundzic; Elmira Kujundzic; Jeffrey L Olson
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-13
Journal Detail:
Title:  Clinical & experimental ophthalmology     Volume:  -     ISSN:  1442-9071     ISO Abbreviation:  Clin. Experiment. Ophthalmol.     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100896531     Medline TA:  Clin Experiment Ophthalmol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2012 The Authors. Clinical and Experimental Ophthalmology © 2012 Royal Australian and New Zealand College of Ophthalmologists.
Department of Ophthalmology, University of Colorado School of Medicine, Rocky Mountain Lions Eye Institute, Colorado.
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