Scanning electron microscopic characteristics of Phakic intraocular lenses
Identifieur interne : 008655 ( Main/Merge ); précédent : 008654; suivant : 008656Scanning electron microscopic characteristics of Phakic intraocular lenses
Auteurs : Thomas Kohnen [Allemagne] ; Martin Baumeister [Allemagne] ; Gerd Magdowski [Allemagne]Source :
- Ophthalmology : (Rochester, MN) [ 0161-6420 ] ; 2000.
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- Pascal (Inist)
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Abstract
Objective: To analyze the surface quality of new generation phakic intraocular lenses (lOLs). Design: Experimental materials study. Materials: Three different new generation phakic lOLs: angle-fixated anterior chamber lens Chiron Vision NuVita MA20 (polymethylmethacrylate [PMMA]), iris-fixated anterior chamber lens Ophtec Artisan Iris-Claw (PMMA), posterior chamber lens Staar ICM (polymer from porcine collagen and 2-hydroxyethyl methacrylate [HEMA]). Methods: Representative samples of three different phakic lOLs underwent surface and edge-finish examination with light microscopy (LM). The phakic lOLs were then examined by use of scanning electron microscopy (SEM), and particular attention was given to optic surface quality, edge finish, haptic, and optic/haptic junction. Results: In all lOLs the LM examination showed a smooth and homogeneous surface. No irregularities, particularly at the optic front and back surface, optic edge, haptic, and the optic/haptic junctions, were detected by SEM. One exception was a minor surface roughness at the claws of an Artisan iris-fixated anterior chamber IOL. Conclusions: Phakic lOLs are implanted either in the anterior or posterior chamber of healthy eyes, and high standards for their surface quality are required. The evaluation of surface properties with LM and SEM did not reveal any defects that contraindicate the implantation of phakic lOLs.
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Main</s2><s3>DEU</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Allemagne</country><wicri:noRegion>Frankfurt am Main</wicri:noRegion><wicri:noRegion>Johann Wolfgang Goethe-University</wicri:noRegion><wicri:noRegion>Frankfurt am Main</wicri:noRegion></affiliation></author><author><name sortKey="Magdowski, Gerd" sort="Magdowski, Gerd" uniqKey="Magdowski G" first="Gerd" last="Magdowski">Gerd Magdowski</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Institute of Anatomy and Cellular Biology, University of Giessen.</s1><s2>Giessen</s2><s3>DEU</s3><sZ>3 aut.</sZ></inist:fA14><country>Allemagne</country><wicri:noRegion>Giessen</wicri:noRegion><wicri:noRegion>University of Giessen.</wicri:noRegion><wicri:noRegion>Giessen</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">01-0403432</idno><date when="2000">2000</date><idno type="stanalyst">PASCAL 01-0403432 INIST</idno><idno 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Goethe-University</wicri:noRegion><wicri:noRegion>Frankfurt am Main</wicri:noRegion></affiliation></author><author><name sortKey="Baumeister, Martin" sort="Baumeister, Martin" uniqKey="Baumeister M" first="Martin" last="Baumeister">Martin Baumeister</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Ophthalmology, Johann Wolfgang Goethe-University</s1><s2>Frankfurt am Main</s2><s3>DEU</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Allemagne</country><wicri:noRegion>Frankfurt am Main</wicri:noRegion><wicri:noRegion>Johann Wolfgang Goethe-University</wicri:noRegion><wicri:noRegion>Frankfurt am Main</wicri:noRegion></affiliation></author><author><name sortKey="Magdowski, Gerd" sort="Magdowski, Gerd" uniqKey="Magdowski G" first="Gerd" last="Magdowski">Gerd Magdowski</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Institute of Anatomy and Cellular Biology, University of Giessen.</s1><s2>Giessen</s2><s3>DEU</s3><sZ>3 aut.</sZ></inist:fA14><country>Allemagne</country><wicri:noRegion>Giessen</wicri:noRegion><wicri:noRegion>University of Giessen.</wicri:noRegion><wicri:noRegion>Giessen</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Ophthalmology : (Rochester, MN)</title><title level="j" type="abbreviated">Ophthalmology : (Rochester MN)</title><idno type="ISSN">0161-6420</idno><imprint><date when="2000">2000</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Ophthalmology : (Rochester, MN)</title><title level="j" type="abbreviated">Ophthalmology : (Rochester MN)</title><idno type="ISSN">0161-6420</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Anterior chamber</term><term>Counter indication</term><term>Experimental study</term><term>Eye</term><term>Implantation</term><term>Intraocular lens</term><term>Posterior chamber</term><term>Quality</term><term>Refractive error</term><term>Scanning transmission electron microscopy</term><term>Surface</term><term>Technique</term><term>Treatment</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Trouble réfraction oculaire</term><term>Traitement</term><term>Technique</term><term>Lentille intraoculaire</term><term>Implantation</term><term>Chambre antérieure</term><term>Chambre postérieure</term><term>Oeil</term><term>Surface</term><term>Qualité</term><term>Contreindication</term><term>Microscopie électronique balayage transmission</term><term>Etude expérimentale</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Objective: To analyze the surface quality of new generation phakic intraocular lenses (lOLs). Design: Experimental materials study. Materials: Three different new generation phakic lOLs: angle-fixated anterior chamber lens Chiron Vision NuVita MA20 (polymethylmethacrylate [PMMA]), iris-fixated anterior chamber lens Ophtec Artisan Iris-Claw (PMMA), posterior chamber lens Staar ICM (polymer from porcine collagen and 2-hydroxyethyl methacrylate [HEMA]). Methods: Representative samples of three different phakic lOLs underwent surface and edge-finish examination with light microscopy (LM). The phakic lOLs were then examined by use of scanning electron microscopy (SEM), and particular attention was given to optic surface quality, edge finish, haptic, and optic/haptic junction. Results: In all lOLs the LM examination showed a smooth and homogeneous surface. No irregularities, particularly at the optic front and back surface, optic edge, haptic, and the optic/haptic junctions, were detected by SEM. One exception was a minor surface roughness at the claws of an Artisan iris-fixated anterior chamber IOL. Conclusions: Phakic lOLs are implanted either in the anterior or posterior chamber of healthy eyes, and high standards for their surface quality are required. The evaluation of surface properties with LM and SEM did not reveal any defects that contraindicate the implantation of phakic lOLs.</div></front></TEI><affiliations><list><country><li>Allemagne</li></country></list><tree><country name="Allemagne"><noRegion><name sortKey="Kohnen, Thomas" sort="Kohnen, Thomas" uniqKey="Kohnen T" first="Thomas" last="Kohnen">Thomas Kohnen</name></noRegion><name sortKey="Baumeister, Martin" sort="Baumeister, Martin" uniqKey="Baumeister M" first="Martin" last="Baumeister">Martin Baumeister</name><name sortKey="Magdowski, Gerd" sort="Magdowski, Gerd" uniqKey="Magdowski G" first="Gerd" last="Magdowski">Gerd Magdowski</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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