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Ring electrode for radio-frequency heating of the cornea: modelling and in vitro experiments

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Ring electrode for radio-frequency heating of the cornea: modelling and in vitro experiments

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dc.contributor.author Berjano, Enrique es_ES
dc.contributor.author Saiz Rodríguez, Francisco Javier es_ES
dc.contributor.author Alió, J. es_ES
dc.contributor.author Ferrero, J. M. es_ES
dc.date.accessioned 2020-09-24T12:29:48Z
dc.date.available 2020-09-24T12:29:48Z
dc.date.issued 2003-11 es_ES
dc.identifier.issn 0140-0118 es_ES
dc.identifier.uri http://hdl.handle.net/10251/150660
dc.description.abstract [EN] Radio-frequency thermokeratoplasty (RF-TKP) is a technique used to reshape the cornea curvature by means of thermal lesions using radio-frequency currents. This curvature change allows refractive disorders such as hyperopia to be corrected. A new electrode with ring geometry is proposed for RF-TKP. It was designed to create a single thermal lesion with a full-circle shape. Finite element models were developed, and the temperature distributions in the cornea were analysed for different ring electrode characteristics. The computer results indicated that the maximum temperature in the cornea was located in the vicinity of the ring electrode outer perimeter, and that the lesions had a semi-torus shape. The results also indicated that the electrode thickness, electrode radius and electrode thermal conductivity had a significant influence on the temperature distributions. In addition, in vitro experiments were performed on rabbit eyes. At 5 IN power the lesions were fully circular. Some lesions showed non-uniform characteristics along their circular path. Lesion depth depended on heating duration (60% of corneal thickness for 20s, and 30% for 10s). The results suggest that the critical shrinkage temperature (55-63degreesC) was reached at the central stroma and along the entire circular path in all the cases. es_ES
dc.language Inglés es_ES
dc.publisher Springer-Verlag es_ES
dc.relation.ispartof Medical & Biological Engineering & Computing es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Computer model es_ES
dc.subject Cornea es_ES
dc.subject Hyperopia es_ES
dc.subject Finite element method es_ES
dc.subject Radio-frequency es_ES
dc.subject Thermokeratoplasty es_ES
dc.subject.classification TECNOLOGIA ELECTRONICA es_ES
dc.title Ring electrode for radio-frequency heating of the cornea: modelling and in vitro experiments es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1007/BF02349970 es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Electrónica - Departament d'Enginyeria Electrònica es_ES
dc.description.bibliographicCitation Berjano, E.; Saiz Rodríguez, FJ.; Alió, J.; Ferrero, JM. (2003). Ring electrode for radio-frequency heating of the cornea: modelling and in vitro experiments. Medical & Biological Engineering & Computing. 41(6):630-639. https://doi.org/10.1007/BF02349970 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1007/BF02349970 es_ES
dc.description.upvformatpinicio 630 es_ES
dc.description.upvformatpfin 639 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 41 es_ES
dc.description.issue 6 es_ES
dc.relation.pasarela S\23625 es_ES
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