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dc.contributor.authorGuaus Guerrero, Ester
dc.contributor.authorFàbregas, Carla
dc.contributor.authorPérez, Miriam
dc.contributor.authorTorrent Burgués, Juan
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.date.accessioned2017-03-16T11:32:34Z
dc.date.available2017-03-16T11:32:34Z
dc.date.issued2017-03-09
dc.identifier.citationGuaus, E., Fàbregas, C., Pérez, M., Torrent, J.; Torrent-Burgués, J. A Combined Clinical and Langmuir Film Study of Natural Tear Films. "International Journal of Ophthalmology and Visual Science", 9 Març 2017, vol. 2, núm. 2, p. 5-14.
dc.identifier.urihttp://hdl.handle.net/2117/102576
dc.description.abstractThe Langmuir technique has been applied to the study of natural tears and the results obtained from surface pressure-area isotherms have been correlated with those of clinical tests (the Schirmer and the TFBUT tests). The population studied only included people aged over 45. Natural tears were collected from Schirmer strips, which were placed in contact with the water subphase of a Langmuir trough for recording the surface pressure-area isotherms. These isotherms have been classified as good or weak according to the characteristics obtained. From the isotherms, characteristic values such as plimit, CS-1max and pmax were also obtained. The analysis from the Chi-squared test indicates dependence between the Schirmer test and the type of isotherms (P<0.05). In the case of the TFBUT test and the type of isotherms the value of P>0.05 indicates that the independence cannot be discarded with the significance criteria imposed. Working with the same criteria of significance, we obtain moderate or good Pearson correlation coefficients with statistical significance (P<0.05) between the values of the Schirmer test and the plimit, CS-1max and pmax values. On the other hand, we obtain low Pearson correlation coefficients with no statistical significance (P>0.05) between the values of the TFBUT test and the plimit, CS-1max and pmax values.
dc.format.extent10 p.
dc.language.isoeng
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Ciències de la visió::Biologia ocular
dc.subject.lcshThin films
dc.subject.otherNatural Tears
dc.subject.otherSurface Pressure-Area Isotherm
dc.subject.otherElastic Modulus
dc.subject.otherSchirmer Test
dc.subject.otherTear Film Break-Up-Time (TFBUT)
dc.titleA Combined Clinical and Langmuir Film Study of Natural Tear Films
dc.typeArticle
dc.subject.lemacCapes fines
dc.contributor.groupUniversitat Politècnica de Catalunya. GBMI - Grup de Biotecnologia Molecular i Industrial
dc.identifier.doi10.11648/j.ijovs.20170202.11
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://www.sciencepublishinggroup.com/journal/paperinfo?journalid=230&doi=10.11648/j.ijovs.20170202.11
dc.rights.accessOpen Access
drac.iddocument19791958
dc.description.versionPostprint (published version)
upcommons.citation.authorGuaus, E., Fàbregas, C., Pérez, M., Torrent, J.; Torrent-Burgués, J.
upcommons.citation.publishedtrue
upcommons.citation.publicationNameInternational Journal of Ophthalmology and Visual Science
upcommons.citation.volume2
upcommons.citation.number2
upcommons.citation.startingPage5
upcommons.citation.endingPage14


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