Use of microbubble ultrasound contrast agent to demonstrate the iris valve effect in human eye bank eyes
PURPOSE: To demonstrate that the interface between the normal iris and the lens surface functions as a flap valve. METHOD: Microbubble ultrasound contrast agent was injected into the anterior and posterior chambers of human eye bank eyes and the distribution of contrast imaged with high-frequency ul...
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| Veröffentlicht in: | American journal of ophthalmology 1998-11, Vol.126 (5), p.719-720 |
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| container_title | American journal of ophthalmology |
| container_volume | 126 |
| creator | Pavlin, Charles J. Burns, Peter N. Foster, F.Stuart |
| description | PURPOSE: To demonstrate that the interface between the normal iris and the lens surface functions as a flap valve.
METHOD: Microbubble ultrasound contrast agent was injected into the anterior and posterior chambers of human eye bank eyes and the distribution of contrast imaged with high-frequency ultrasound.
RESULTS: Contrast agent did not enter the posterior chamber when injected into the anterior chamber, but contrast agent injected into the posterior chamber easily flowed into the anterior chamber.
CONCLUSIONS: The iris–lens interface normally functions as a flap valve, preventing retrograde flow from the anterior to the posterior chamber. A temporary increase in anterior chamber pressure thus results in iris concavity in pigmentary dispersion syndrome. |
| doi_str_mv | 10.1016/S0002-9394(98)00143-3 |
| format | Article |
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METHOD: Microbubble ultrasound contrast agent was injected into the anterior and posterior chambers of human eye bank eyes and the distribution of contrast imaged with high-frequency ultrasound.
RESULTS: Contrast agent did not enter the posterior chamber when injected into the anterior chamber, but contrast agent injected into the posterior chamber easily flowed into the anterior chamber.
CONCLUSIONS: The iris–lens interface normally functions as a flap valve, preventing retrograde flow from the anterior to the posterior chamber. A temporary increase in anterior chamber pressure thus results in iris concavity in pigmentary dispersion syndrome.</description><identifier>ISSN: 0002-9394</identifier><identifier>EISSN: 1879-1891</identifier><identifier>DOI: 10.1016/S0002-9394(98)00143-3</identifier><identifier>PMID: 9822238</identifier><identifier>CODEN: AJOPAA</identifier><language>eng</language><publisher>New York, NY: Elsevier Inc</publisher><subject>Adult ; Anterior Chamber - diagnostic imaging ; Aqueous Humor - metabolism ; Biological and medical sciences ; Contrast Media - metabolism ; Eye and associated structures. Visual pathways and centers. Vision ; Eye Banks ; Fundamental and applied biological sciences. Psychology ; Humans ; Iris - diagnostic imaging ; Iris - physiology ; Lens, Crystalline - diagnostic imaging ; Lens, Crystalline - physiology ; Ocular Physiological Phenomena ; Polymers ; Ultrasonography ; Vertebrates: nervous system and sense organs</subject><ispartof>American journal of ophthalmology, 1998-11, Vol.126 (5), p.719-720</ispartof><rights>1998 Elsevier Science Inc.</rights><rights>1998 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c389t-1f64a19e2782cfd1c596249b072f77b21cd36664a3d17bf30b64f534dcfaac963</citedby><cites>FETCH-LOGICAL-c389t-1f64a19e2782cfd1c596249b072f77b21cd36664a3d17bf30b64f534dcfaac963</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0002939498001433$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=2439969$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/9822238$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Pavlin, Charles J.</creatorcontrib><creatorcontrib>Burns, Peter N.</creatorcontrib><creatorcontrib>Foster, F.Stuart</creatorcontrib><title>Use of microbubble ultrasound contrast agent to demonstrate the iris valve effect in human eye bank eyes</title><title>American journal of ophthalmology</title><addtitle>Am J Ophthalmol</addtitle><description>PURPOSE: To demonstrate that the interface between the normal iris and the lens surface functions as a flap valve.
METHOD: Microbubble ultrasound contrast agent was injected into the anterior and posterior chambers of human eye bank eyes and the distribution of contrast imaged with high-frequency ultrasound.
RESULTS: Contrast agent did not enter the posterior chamber when injected into the anterior chamber, but contrast agent injected into the posterior chamber easily flowed into the anterior chamber.
CONCLUSIONS: The iris–lens interface normally functions as a flap valve, preventing retrograde flow from the anterior to the posterior chamber. A temporary increase in anterior chamber pressure thus results in iris concavity in pigmentary dispersion syndrome.</description><subject>Adult</subject><subject>Anterior Chamber - diagnostic imaging</subject><subject>Aqueous Humor - metabolism</subject><subject>Biological and medical sciences</subject><subject>Contrast Media - metabolism</subject><subject>Eye and associated structures. Visual pathways and centers. Vision</subject><subject>Eye Banks</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Humans</subject><subject>Iris - diagnostic imaging</subject><subject>Iris - physiology</subject><subject>Lens, Crystalline - diagnostic imaging</subject><subject>Lens, Crystalline - physiology</subject><subject>Ocular Physiological Phenomena</subject><subject>Polymers</subject><subject>Ultrasonography</subject><subject>Vertebrates: nervous system and sense organs</subject><issn>0002-9394</issn><issn>1879-1891</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1998</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkEtv1DAQgC0EKkvhJ1TyASE4pPiRxPEJVRWPSpU4lJ4tP8asIbGL7azUf19vd7VXTh57vhnPfAhdUHJJCR0_3xFCWCe57D_K6RMhtOcdf4E2dBKyo5OkL9HmhLxGb0r5066j6MUZOpMTY4xPG7S9L4CTx0uwOZnVmBnwOtesS1qjwzbFfVyx_g2x4pqwgyXF0h4r4LoFHHIoeKfnHWDwHmzFIeLtuuiI4RGw0fHvPihv0Suv5wLvjuc5uv_29df1j-725_eb66vbzvJJ1o76sddUAhMTs95RO8iR9dIQwbwQhlHr-Dg2hjsqjOfEjL0feO-s19rKkZ-jD4e-Dzn9W6FUtYRiYZ51hLQWJQgZhtahgcMBbIuXksGrhxwWnR8VJWpvWD0bVnt9Sk7q2bDire7i-MFqFnCnqqPSln9_zOti9eyzjjaUE8Z6LuUoG_blgEGTsQuQVbEBogUXcrOoXAr_GeQJfimYoA</recordid><startdate>19981101</startdate><enddate>19981101</enddate><creator>Pavlin, Charles J.</creator><creator>Burns, Peter N.</creator><creator>Foster, F.Stuart</creator><general>Elsevier Inc</general><general>Elsevier</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>19981101</creationdate><title>Use of microbubble ultrasound contrast agent to demonstrate the iris valve effect in human eye bank eyes</title><author>Pavlin, Charles J. ; Burns, Peter N. ; Foster, F.Stuart</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c389t-1f64a19e2782cfd1c596249b072f77b21cd36664a3d17bf30b64f534dcfaac963</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1998</creationdate><topic>Adult</topic><topic>Anterior Chamber - diagnostic imaging</topic><topic>Aqueous Humor - metabolism</topic><topic>Biological and medical sciences</topic><topic>Contrast Media - metabolism</topic><topic>Eye and associated structures. Visual pathways and centers. Vision</topic><topic>Eye Banks</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Humans</topic><topic>Iris - diagnostic imaging</topic><topic>Iris - physiology</topic><topic>Lens, Crystalline - diagnostic imaging</topic><topic>Lens, Crystalline - physiology</topic><topic>Ocular Physiological Phenomena</topic><topic>Polymers</topic><topic>Ultrasonography</topic><topic>Vertebrates: nervous system and sense organs</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Pavlin, Charles J.</creatorcontrib><creatorcontrib>Burns, Peter N.</creatorcontrib><creatorcontrib>Foster, F.Stuart</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>American journal of ophthalmology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Pavlin, Charles J.</au><au>Burns, Peter N.</au><au>Foster, F.Stuart</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Use of microbubble ultrasound contrast agent to demonstrate the iris valve effect in human eye bank eyes</atitle><jtitle>American journal of ophthalmology</jtitle><addtitle>Am J Ophthalmol</addtitle><date>1998-11-01</date><risdate>1998</risdate><volume>126</volume><issue>5</issue><spage>719</spage><epage>720</epage><pages>719-720</pages><issn>0002-9394</issn><eissn>1879-1891</eissn><coden>AJOPAA</coden><abstract>PURPOSE: To demonstrate that the interface between the normal iris and the lens surface functions as a flap valve.
METHOD: Microbubble ultrasound contrast agent was injected into the anterior and posterior chambers of human eye bank eyes and the distribution of contrast imaged with high-frequency ultrasound.
RESULTS: Contrast agent did not enter the posterior chamber when injected into the anterior chamber, but contrast agent injected into the posterior chamber easily flowed into the anterior chamber.
CONCLUSIONS: The iris–lens interface normally functions as a flap valve, preventing retrograde flow from the anterior to the posterior chamber. A temporary increase in anterior chamber pressure thus results in iris concavity in pigmentary dispersion syndrome.</abstract><cop>New York, NY</cop><pub>Elsevier Inc</pub><pmid>9822238</pmid><doi>10.1016/S0002-9394(98)00143-3</doi><tpages>2</tpages></addata></record> |
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| ispartof | American journal of ophthalmology, 1998-11, Vol.126 (5), p.719-720 |
| issn | 0002-9394 1879-1891 |
| language | eng |
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| source | MEDLINE; Elsevier ScienceDirect Journals |
| subjects | Adult Anterior Chamber - diagnostic imaging Aqueous Humor - metabolism Biological and medical sciences Contrast Media - metabolism Eye and associated structures. Visual pathways and centers. Vision Eye Banks Fundamental and applied biological sciences. Psychology Humans Iris - diagnostic imaging Iris - physiology Lens, Crystalline - diagnostic imaging Lens, Crystalline - physiology Ocular Physiological Phenomena Polymers Ultrasonography Vertebrates: nervous system and sense organs |
| title | Use of microbubble ultrasound contrast agent to demonstrate the iris valve effect in human eye bank eyes |
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