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Article: A guide to the removal of heavy silicone oil

TitleA guide to the removal of heavy silicone oil
Authors
Issue Date2008
PublisherBMJ Publishing Group. The Journal's web site is located at http://bjo.bmjjournals.com/
Citation
British Journal Of Ophthalmology, 2008, v. 92 n. 6, p. 844-847 How to Cite?
AbstractAim: Heavy silicone oil removal can be challenging and differs considerably from conventional oil. Traditionally, strong active aspiration had to be applied through a long 18G needle just above the optic disc. We present a novel technique using a much shorter (7.5 mm) and smaller (20G) needle allowing its removal "from a distance." Method: Active aspiration on a vacuum of 600 mm Hg of the "viscous fluid injector" was applied using the 20G cannula in a polymethylmethacrylate model eye chamber that was surface-modified to mimic the surface properties of the retina. Measurements were taken using still photographs. Results: Under injection the maximum diameter of a silicone oil bubble supported by interfacial tension alone was 5 mm for a steel and 7 mm for a polyurethane cannula. Under suction, the silicone bubble changed shape and became conical, thus further increasing the cannula's reach. This conical shape illustrated "tubeless siphoning," which is a physical property of non-Newtonian fluids. Discussion: The use of shorter and smaller gauge cannula for removal of Densiron obviates the need to enlarge the sclerotomy beyond 20G or to apply suction in close proximity to disc and fovea. This potentially reduces the risk of iatrogenic damage such as entry site tears or postoperative hypotony.
Persistent Identifierhttp://hdl.handle.net/10722/90387
ISSN
2015 Impact Factor: 3.036
2015 SCImago Journal Rankings: 1.873
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorStappler, Ten_HK
dc.contributor.authorWilliams, Ren_HK
dc.contributor.authorGibran, SKen_HK
dc.contributor.authorLiazos, Een_HK
dc.contributor.authorWong, Den_HK
dc.date.accessioned2010-09-06T10:09:39Z-
dc.date.available2010-09-06T10:09:39Z-
dc.date.issued2008en_HK
dc.identifier.citationBritish Journal Of Ophthalmology, 2008, v. 92 n. 6, p. 844-847en_HK
dc.identifier.issn0007-1161en_HK
dc.identifier.urihttp://hdl.handle.net/10722/90387-
dc.description.abstractAim: Heavy silicone oil removal can be challenging and differs considerably from conventional oil. Traditionally, strong active aspiration had to be applied through a long 18G needle just above the optic disc. We present a novel technique using a much shorter (7.5 mm) and smaller (20G) needle allowing its removal "from a distance." Method: Active aspiration on a vacuum of 600 mm Hg of the "viscous fluid injector" was applied using the 20G cannula in a polymethylmethacrylate model eye chamber that was surface-modified to mimic the surface properties of the retina. Measurements were taken using still photographs. Results: Under injection the maximum diameter of a silicone oil bubble supported by interfacial tension alone was 5 mm for a steel and 7 mm for a polyurethane cannula. Under suction, the silicone bubble changed shape and became conical, thus further increasing the cannula's reach. This conical shape illustrated "tubeless siphoning," which is a physical property of non-Newtonian fluids. Discussion: The use of shorter and smaller gauge cannula for removal of Densiron obviates the need to enlarge the sclerotomy beyond 20G or to apply suction in close proximity to disc and fovea. This potentially reduces the risk of iatrogenic damage such as entry site tears or postoperative hypotony.en_HK
dc.languageengen_HK
dc.publisherBMJ Publishing Group. The Journal's web site is located at http://bjo.bmjjournals.com/en_HK
dc.relation.ispartofBritish Journal of Ophthalmologyen_HK
dc.rightsBritish Journal of Ophthalmology. Copyright © B M J Publishing Group.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subject.meshDrainage - instrumentation - methods-
dc.subject.meshEquipment Design-
dc.subject.meshEye-
dc.subject.meshHumans-
dc.subject.meshSilicone Oils-
dc.titleA guide to the removal of heavy silicone oilen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0007-1161&volume=92&issue=6&spage=844&epage=847&date=2008&atitle=A+guide+to+the+removal+of+heavy+silicone+oilen_HK
dc.identifier.emailWong, D: shdwong@hku.hken_HK
dc.identifier.authorityWong, D=rp00516en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1136/bjo.2007.134569en_HK
dc.identifier.pmid18460540-
dc.identifier.scopuseid_2-s2.0-45249107274en_HK
dc.identifier.hkuros167135en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-45249107274&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume92en_HK
dc.identifier.issue6en_HK
dc.identifier.spage844en_HK
dc.identifier.epage847en_HK
dc.identifier.isiWOS:000256407400027-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridStappler, T=8563727800en_HK
dc.identifier.scopusauthoridWilliams, R=10042153900en_HK
dc.identifier.scopusauthoridGibran, SK=13205333800en_HK
dc.identifier.scopusauthoridLiazos, E=24577500600en_HK
dc.identifier.scopusauthoridWong, D=7401536078en_HK

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