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https://hdl.handle.net/1822/8255
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Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Lira, Madalena | - |
dc.contributor.author | Santos, Lívia | - |
dc.contributor.author | Azeredo, Joana | - |
dc.contributor.author | Yebra-Pimentel Vilar, Eva | - |
dc.contributor.author | Oliveira, M. Elisabete | - |
dc.date.accessioned | 2008-11-07T11:18:46Z | - |
dc.date.available | 2008-11-07T11:18:46Z | - |
dc.date.issued | 2008-05 | - |
dc.identifier.citation | "Journal of Biomedical Materials Research Part B : Applied Biomaterials". ISSN 1552-4973. 85B:2 (May 2008) 361-367. | eng |
dc.identifier.issn | 1552-4973 | eng |
dc.identifier.uri | https://hdl.handle.net/1822/8255 | - |
dc.description.abstract | Purpose: The aim of this study was to analyze surface changes of three silicone-hydrogel contact lenses after daily wear. The lenses used in this study were balafilcon A, lotrafilcon B (both surface-treated), and galyfilcon A (non surface-treated). Methods: To understand how and where proteins, lipids, and other contaminants change contact lenses, surface roughness was assessed through Atomic Force Microscopy Tapping ModeTM. Roughness parameters were Mean Surface roughness (Ra), Mean-square-roughness (Rq), and Maximum roughness (Rmax). The surface topography of unworn and worn lenses was also mapped in great detail. Results: Contact lenses roughness parameters exhibited different values before and after wear and the surface appearance also changed. After wear, balafilcon A and galyfilcon A showed a significant increase on surface roughness parameters, being this increase more accentuated to galyfilcon A. In lotrafilcon B materials no significant changes were observed with wear. Conclusions: The present study suggests that surface treatment of silicone-hydrogel contact lenses can play a role in the prevention of a significant increase in roughness, and contribute to the better clinical tolerance of these lenses. | eng |
dc.description.sponsorship | University of Porto | por |
dc.description.sponsorship | IBMC | por |
dc.language.iso | eng | eng |
dc.publisher | John Wiley and Sons | eng |
dc.rights | openAccess | eng |
dc.subject | Atomic force microscopy | eng |
dc.subject | Contact lens | eng |
dc.subject | Degradation | eng |
dc.subject | Polymer | eng |
dc.subject | Surface analysis | eng |
dc.title | Comparative study of silicone-hydrogel contact lenses Surfaces before and after wear using atomic force microscopy | eng |
dc.type | article | por |
dc.peerreviewed | yes | eng |
sdum.number | 2 | eng |
sdum.pagination | 361-367 | eng |
sdum.publicationstatus | published | eng |
sdum.volume | 85B | eng |
oaire.citationStartPage | 361 | por |
oaire.citationEndPage | 367 | por |
oaire.citationIssue | 2 | por |
oaire.citationVolume | 85B | por |
dc.identifier.doi | 10.1002/jbm.b.30954 | por |
dc.identifier.pmid | 17957701 | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Journal of Biomedical Materials Research - Part B: Applied Biomaterials | por |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Lira_JBMR[1].pdf | 407,73 kB | Adobe PDF | Ver/Abrir |