Scanning Electron Microscopic Characteristics of Small-incision Intraocular Lenses
Identifieur interne : 003198 ( Istex/Curation ); précédent : 003197; suivant : 003199Scanning Electron Microscopic Characteristics of Small-incision Intraocular Lenses
Auteurs : Osama Omar ; Nick Mamalis [États-Unis] ; John Veiga ; Manabu Tamura [Japon] ; Randall J. OlsonSource :
- Ophthalmology [ 0161-6420 ] ; 1996.
Abstract
Purpose: To evaluate the surface characteristics of commonly used, small-incision, intraocular lenses (IOLs).Methods: Representative samples of five groups of foldable IOLs (4 silicone and 1 acrylic) underwent surface and edge-finish examination using a slit lamp. The IOLs were folded using a folding block and forceps. All the IOLs then were examined using a scanning electron microscope. A one-piece polymethylmethacrylate IOL was used for comparing surface-finish characteristics. The IOLs were examined for optic surface quality, edge finish, haptic, haptic/optic junction, and possible post-folding modifications.Results: Slit-lamp evaluation of the surface quality of all of the silicone lenses demonstrated a smooth finish of the optic surface, edge, and haptics. Scanning electron microscopic analysis of the IOLs demonstrated adequately finished haptics or footplates and optics. Excess molding flash was seen on the edges of the some of the silicone IOLs, and no molding flash was observed on others. The acrylic IOL had a somewhat sharper optic edge. Irregular finish of the haptic/optic junctions of some of the IOLs (both silicone and acrylics was noted.Conclusions: Currently available foldable IOLs have demonstrated adequate lens finish. However, irregularities of the haptic/optic junctions and molding flash are present on most IOLs evaluated, indicating room for improvement in the finish of foldable IOLs. Phacoemulsification with capsular bag IOL placement may decrease the clinical significance of these relatively subtle lens finish irregularities.
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DOI: 10.1016/S0161-6420(96)30557-5
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Osama Omar<affiliation><mods:affiliation>John A. Moran Eye Center, University of Utah, Salt Lake City</mods:affiliation><wicri:noCountry code="subField">Salt Lake City</wicri:noCountry></affiliation><affiliation><mods:affiliation>John A. Moran Eye Center, University of Utah, Salt Lake City</mods:affiliation><wicri:noCountry code="subField">Salt Lake City</wicri:noCountry></affiliation><affiliation wicri:level="2"><mods:affiliation>Reprint requests to Nick Mamalis, MD, Moran Eye Center, University of Utah, SO North Medical Drive, Salt Lake City, UT 84132.</mods:affiliation><country xml:lang="fr">États-Unis</country><placeName><region type="state">Utah</region></placeName><wicri:cityArea>Reprint requests to Nick Mamalis, MD, Moran Eye Center, University of Utah, SO North Medical Drive, Salt Lake City</wicri:cityArea></affiliation><affiliation><mods:affiliation>John A. Moran Eye Center, University of Utah, Salt Lake City</mods:affiliation><wicri:noCountry code="subField">Salt Lake City</wicri:noCountry></affiliation><affiliation><mods:affiliation>John A. Moran Eye Center, University of Utah, Salt Lake City</mods:affiliation><wicri:noCountry code="subField">Salt Lake City</wicri:noCountry></affiliation>Le document en format XML
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Moran Eye Center, University of Utah, Salt Lake City</mods:affiliation><wicri:noCountry code="subField">Salt Lake City</wicri:noCountry></affiliation><affiliation wicri:level="2"><mods:affiliation>Reprint requests to Nick Mamalis, MD, Moran Eye Center, University of Utah, SO North Medical Drive, Salt Lake City, UT 84132.</mods:affiliation><country xml:lang="fr">États-Unis</country><placeName><region type="state">Utah</region></placeName><wicri:cityArea>Reprint requests to Nick Mamalis, MD, Moran Eye Center, University of Utah, SO North Medical Drive, Salt Lake City</wicri:cityArea></affiliation></author><author><name sortKey="Veiga, John" sort="Veiga, John" uniqKey="Veiga J" first="John" last="Veiga">John Veiga</name><affiliation><mods:affiliation>John A. Moran Eye Center, University of Utah, Salt Lake City</mods:affiliation><wicri:noCountry code="subField">Salt Lake City</wicri:noCountry></affiliation></author><author><name sortKey="Tamura, Manabu" sort="Tamura, Manabu" uniqKey="Tamura M" first="Manabu" last="Tamura">Manabu Tamura</name><affiliation wicri:level="1"><mods:affiliation>Wakayama, Japan</mods:affiliation><country xml:lang="fr">Japon</country><wicri:regionArea>Wakayama</wicri:regionArea></affiliation></author><author><name sortKey="Olson, Randall J" sort="Olson, Randall J" uniqKey="Olson R" first="Randall J." last="Olson">Randall J. Olson</name><affiliation><mods:affiliation>John A. Moran Eye Center, University of Utah, Salt Lake City</mods:affiliation><wicri:noCountry code="subField">Salt Lake City</wicri:noCountry></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:2F949208234E7603782C6E9A8E73F4F507A4D427</idno><date when="1996" year="1996">1996</date><idno type="doi">10.1016/S0161-6420(96)30557-5</idno><idno type="url">https://api.istex.fr/document/2F949208234E7603782C6E9A8E73F4F507A4D427/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">003198</idno><idno type="wicri:Area/Istex/Curation">003198</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Scanning Electron Microscopic Characteristics of Small-incision Intraocular Lenses</title><author><name sortKey="Omar, Osama" sort="Omar, Osama" uniqKey="Omar O" first="Osama" last="Omar">Osama Omar</name><affiliation><mods:affiliation>John A. Moran Eye Center, University of Utah, Salt Lake City</mods:affiliation><wicri:noCountry code="subField">Salt Lake City</wicri:noCountry></affiliation></author><author><name sortKey="Mamalis, Nick" sort="Mamalis, Nick" uniqKey="Mamalis N" first="Nick" last="Mamalis">Nick Mamalis</name><affiliation><mods:affiliation>John A. Moran Eye Center, University of Utah, Salt Lake City</mods:affiliation><wicri:noCountry code="subField">Salt Lake City</wicri:noCountry></affiliation><affiliation wicri:level="2"><mods:affiliation>Reprint requests to Nick Mamalis, MD, Moran Eye Center, University of Utah, SO North Medical Drive, Salt Lake City, UT 84132.</mods:affiliation><country xml:lang="fr">États-Unis</country><placeName><region type="state">Utah</region></placeName><wicri:cityArea>Reprint requests to Nick Mamalis, MD, Moran Eye Center, University of Utah, SO North Medical Drive, Salt Lake City</wicri:cityArea></affiliation></author><author><name sortKey="Veiga, John" sort="Veiga, John" uniqKey="Veiga J" first="John" last="Veiga">John Veiga</name><affiliation><mods:affiliation>John A. Moran Eye Center, University of Utah, Salt Lake City</mods:affiliation><wicri:noCountry code="subField">Salt Lake City</wicri:noCountry></affiliation></author><author><name sortKey="Tamura, Manabu" sort="Tamura, Manabu" uniqKey="Tamura M" first="Manabu" last="Tamura">Manabu Tamura</name><affiliation wicri:level="1"><mods:affiliation>Wakayama, Japan</mods:affiliation><country xml:lang="fr">Japon</country><wicri:regionArea>Wakayama</wicri:regionArea></affiliation></author><author><name sortKey="Olson, Randall J" sort="Olson, Randall J" uniqKey="Olson R" first="Randall J." last="Olson">Randall J. Olson</name><affiliation><mods:affiliation>John A. Moran Eye Center, University of Utah, Salt Lake City</mods:affiliation><wicri:noCountry code="subField">Salt Lake City</wicri:noCountry></affiliation></author></analytic><monogr></monogr><series><title level="j">Ophthalmology</title><title level="j" type="abbrev">OPHTHA</title><idno type="ISSN">0161-6420</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1996">1996</date><biblScope unit="volume">103</biblScope><biblScope unit="issue">7</biblScope><biblScope unit="page" from="1124">1124</biblScope><biblScope unit="page" to="1129">1129</biblScope></imprint><idno type="ISSN">0161-6420</idno></series><idno type="istex">2F949208234E7603782C6E9A8E73F4F507A4D427</idno><idno type="DOI">10.1016/S0161-6420(96)30557-5</idno><idno type="PII">S0161-6420(96)30557-5</idno><idno type="ArticleID">30758</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0161-6420</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">Purpose: To evaluate the surface characteristics of commonly used, small-incision, intraocular lenses (IOLs).Methods: Representative samples of five groups of foldable IOLs (4 silicone and 1 acrylic) underwent surface and edge-finish examination using a slit lamp. The IOLs were folded using a folding block and forceps. All the IOLs then were examined using a scanning electron microscope. A one-piece polymethylmethacrylate IOL was used for comparing surface-finish characteristics. The IOLs were examined for optic surface quality, edge finish, haptic, haptic/optic junction, and possible post-folding modifications.Results: Slit-lamp evaluation of the surface quality of all of the silicone lenses demonstrated a smooth finish of the optic surface, edge, and haptics. Scanning electron microscopic analysis of the IOLs demonstrated adequately finished haptics or footplates and optics. Excess molding flash was seen on the edges of the some of the silicone IOLs, and no molding flash was observed on others. The acrylic IOL had a somewhat sharper optic edge. Irregular finish of the haptic/optic junctions of some of the IOLs (both silicone and acrylics was noted.Conclusions: Currently available foldable IOLs have demonstrated adequate lens finish. However, irregularities of the haptic/optic junctions and molding flash are present on most IOLs evaluated, indicating room for improvement in the finish of foldable IOLs. Phacoemulsification with capsular bag IOL placement may decrease the clinical significance of these relatively subtle lens finish irregularities.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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