Scanning electron microscopic analysis of foldable acrylic and hydrogel intraocular lenses
Identifieur interne : 009692 ( Main/Merge ); précédent : 009691; suivant : 009693Scanning electron microscopic analysis of foldable acrylic and hydrogel intraocular lenses
Auteurs : Thomas Kohnen [États-Unis] ; Gerd Magdowski [Allemagne] ; Douglas D. Koch [États-Unis]Source :
- Journal of Cataract & Refractive Surgery [ 0886-3350 ] ; 1996.
Abstract
Objective: To analyze the surface quality of foldable acrylic and hydrogel intraocular lenses (IOLs).Setting: Cullen Eye Institute, Baylor College of Medicine, Houston, Texas, and Institute of Anatomy and Cellular Biology, University of Giessen, Germany.Methods: We studied eight foldable IOL models with optics made of six different acrylate/methacrylate polymers: Acrylens ACR360 (loptex), AcrySof MA60BM (AIcon), MemoryLens U940A (Mentor), 92S and 92C (Morcher), Hydroview H60M (Storz), HydroSof SH30BC (Alcon), and ISH66 (Corneal). Four IOLs of each design were examined. Light and scanning electron microscopy were performed before and after IOL folding with forceps.Results: All IOL models had excellent optic and haptic surfaces. The haptic-optic junctions revealed minimal empty spaces or irregularities in three of the five three-piece IOLs and smooth surfaces in all one-piece IOLs. Minimal surface alterations and superficial defects caused by folding were detectable in the two acrylate (acrylic) IOLs (loptex ACR360, Alcon MA60BM) with low water content.Conclusion: Intraocular lenses of acrylate/methacrylate polymers had excellent surface quality. The acrylic IOLs were vulnerable to mild folding or forceps defects; however, these were less marked than those previously noted with poly(methyl methacrylate) IOLs.
Url:
DOI: 10.1016/S0886-3350(96)80095-2
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<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Scanning electron microscopic analysis of foldable acrylic and hydrogel intraocular lenses</title><author><name sortKey="Kohnen, Thomas" sort="Kohnen, Thomas" uniqKey="Kohnen T" first="Thomas" last="Kohnen">Thomas Kohnen</name></author><author><name sortKey="Magdowski, Gerd" sort="Magdowski, Gerd" uniqKey="Magdowski G" first="Gerd" last="Magdowski">Gerd Magdowski</name></author><author><name sortKey="Koch, Douglas D" sort="Koch, Douglas D" uniqKey="Koch D" first="Douglas D." last="Koch">Douglas D. Koch</name></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:1B143AB5E9A66872266433C02378371A82F12018</idno><date when="1996" year="1996">1996</date><idno type="doi">10.1016/S0886-3350(96)80095-2</idno><idno type="url">https://api.istex.fr/document/1B143AB5E9A66872266433C02378371A82F12018/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">002437</idno><idno type="wicri:Area/Istex/Curation">002437</idno><idno type="wicri:Area/Istex/Checkpoint">003E28</idno><idno type="wicri:doubleKey">0886-3350:1996:Kohnen T:scanning:electron:microscopic</idno><idno type="wicri:Area/Main/Merge">009692</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Scanning electron microscopic analysis of foldable acrylic and hydrogel intraocular lenses</title><author><name sortKey="Kohnen, Thomas" sort="Kohnen, Thomas" uniqKey="Kohnen T" first="Thomas" last="Kohnen">Thomas Kohnen</name><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><placeName><region type="state">Texas</region></placeName><wicri:cityArea>Cullen Eye Institute, Baylor College of Medicine, Department of Ophthalmology, Houston</wicri:cityArea></affiliation><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><placeName><region type="state">Texas</region></placeName><wicri:cityArea>Reprint requests to Thomas Kohnen, MD, Cullen Eye Institute, Baylor College of Medicine, Department of Ophthalmology, 6501 Fannin, NC-200, Houston</wicri:cityArea></affiliation></author><author><name sortKey="Magdowski, Gerd" sort="Magdowski, Gerd" uniqKey="Magdowski G" first="Gerd" last="Magdowski">Gerd Magdowski</name><affiliation wicri:level="1"><country xml:lang="fr">Allemagne</country><wicri:regionArea>Institute of Anatomy and Cellular Biology, University of Giessen</wicri:regionArea><wicri:noRegion>University of Giessen</wicri:noRegion><wicri:noRegion>University of Giessen</wicri:noRegion></affiliation></author><author><name sortKey="Koch, Douglas D" sort="Koch, Douglas D" uniqKey="Koch D" first="Douglas D." last="Koch">Douglas D. Koch</name><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><placeName><region type="state">Texas</region></placeName><wicri:cityArea>Cullen Eye Institute, Baylor College of Medicine, Department of Ophthalmology, Houston</wicri:cityArea></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Cataract & Refractive Surgery</title><title level="j" type="abbrev">JCRS</title><idno type="ISSN">0886-3350</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1996">1996</date><biblScope unit="volume">22</biblScope><biblScope unit="supplement">S2</biblScope><biblScope unit="page" from="1342">1342</biblScope><biblScope unit="page" to="1350">1350</biblScope></imprint><idno type="ISSN">0886-3350</idno></series><idno type="istex">1B143AB5E9A66872266433C02378371A82F12018</idno><idno type="DOI">10.1016/S0886-3350(96)80095-2</idno><idno type="PII">S0886-3350(96)80095-2</idno><idno type="ArticleID">80095</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0886-3350</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Objective: To analyze the surface quality of foldable acrylic and hydrogel intraocular lenses (IOLs).Setting: Cullen Eye Institute, Baylor College of Medicine, Houston, Texas, and Institute of Anatomy and Cellular Biology, University of Giessen, Germany.Methods: We studied eight foldable IOL models with optics made of six different acrylate/methacrylate polymers: Acrylens ACR360 (loptex), AcrySof MA60BM (AIcon), MemoryLens U940A (Mentor), 92S and 92C (Morcher), Hydroview H60M (Storz), HydroSof SH30BC (Alcon), and ISH66 (Corneal). Four IOLs of each design were examined. Light and scanning electron microscopy were performed before and after IOL folding with forceps.Results: All IOL models had excellent optic and haptic surfaces. The haptic-optic junctions revealed minimal empty spaces or irregularities in three of the five three-piece IOLs and smooth surfaces in all one-piece IOLs. Minimal surface alterations and superficial defects caused by folding were detectable in the two acrylate (acrylic) IOLs (loptex ACR360, Alcon MA60BM) with low water content.Conclusion: Intraocular lenses of acrylate/methacrylate polymers had excellent surface quality. The acrylic IOLs were vulnerable to mild folding or forceps defects; however, these were less marked than those previously noted with poly(methyl methacrylate) IOLs.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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