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The Effect of Fractal Contact Lenses on Peripheral Refraction in Myopic Model Eyes

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The Effect of Fractal Contact Lenses on Peripheral Refraction in Myopic Model Eyes

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dc.contributor.author Rodríguez Vallejo, Manuel es_ES
dc.contributor.author Benlloch Fornés, Josefa Isabel es_ES
dc.contributor.author Pons Martí, Amparo es_ES
dc.contributor.author Monsoriu Serra, Juan Antonio es_ES
dc.contributor.author Furlan, Walter Daniel es_ES
dc.date.accessioned 2016-10-27T11:00:18Z
dc.date.available 2016-10-27T11:00:18Z
dc.date.issued 2014-04
dc.identifier.issn 0271-3683
dc.identifier.uri http://hdl.handle.net/10251/72846
dc.description.abstract Purpose: To test multizone contact lenses in model eyes: Fractal Contact Lenses (FCLs), designed to induce myopic peripheral refractive error (PRE). Methods: Zemax ray-tracing software was employed to simulate myopic and accommodation-dependent model eyes fitted with FCLs. PRE, defined in terms of mean sphere M and 90–180 astigmatism J180, was computed at different peripheral positions, ranging from 0 to 35 in steps of 5, and for different pupil diameters (PDs). Simulated visual performance and changes in the PRE were also analyzed for contact lens decentration and model eye accommodation. For comparison purposes, the same simulations were performed with another commercially available contact lens designed for the same intended use: the Dual Focus (DF). Results: PRE was greater with FCL than with DF when both designs were tested for a 3.5 mm PD, and with and without decentration of the lenses. However, PRE depended on PD with both multizone lenses, with a remarkable reduction of the myopic relative effect for a PD of 5.5 mm. The myopic PRE with contact lenses decreased as the myopic refractive error increased, but this could be compensated by increasing the power of treatment zones. A peripheral myopic shift was also induced by the FCLs in the accommodated model eye. In regard to visual performance, a myopia under-correction with reference to the circle of least confusion was obtained in all cases for a 5.5 mm PD. The ghost images, generated by treatment zones of FCL, were dimmer than the ones produced with DF lens of the same power. Conclusions: FCLs produce a peripheral myopic defocus without compromising central vision in photopic conditions. FCLs have several design parameters that can be varied to obtain optimum results: lens diameter, number of zones, addition and asphericity; resulting in a very promising customized lens for the treatment of myopia progression. es_ES
dc.description.sponsorship This research was supported by the Ministerio de Economia y Competitividad (grant FIS2011-23175), the Generalitat Valenciana (grant PROMETEO2009-077) and the Universitat Politecnica de Valencia (grant INNOVA SP20120569), Spain. en_EN
dc.language Inglés es_ES
dc.publisher Taylor & Francis es_ES
dc.relation.ispartof Current Eye Research es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Myopia progression es_ES
dc.subject Myopia es_ES
dc.subject Model eyes es_ES
dc.subject Contact lenses es_ES
dc.subject Peripheral refraction es_ES
dc.subject.classification FISICA APLICADA es_ES
dc.title The Effect of Fractal Contact Lenses on Peripheral Refraction in Myopic Model Eyes es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.3109/02713683.2014.903498
dc.relation.projectID info:eu-repo/grantAgreement/MICINN//FIS2011-23175/ES/DISEÑO Y REALIZACION DE ESTRUCTURAS DIFRACTIVAS APERIODICAS: NUEVAS LENTES OFTALMICAS Y OTRAS APLICACIONES/
dc.relation.projectID info:eu-repo/grantAgreement/UPV//INNOVA SP20120569/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/GVA//PROMETEO%2F2009%2F077/
dc.relation.projectID info:eu-repo/grantAgreement/GVA//PROMETEO09%2F2009%2F077/ES/Grupo de fibras ópticas y procesado de señal/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/UPV/INNOVA/SP20120569/
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny es_ES
dc.description.bibliographicCitation Rodríguez Vallejo, M.; Benlloch Fornés, JI.; Pons Martí, A.; Monsoriu Serra, JA.; Furlan, WD. (2014). The Effect of Fractal Contact Lenses on Peripheral Refraction in Myopic Model Eyes. Current Eye Research. 39(12):1-10. https://doi.org/10.3109/02713683.2014.903498 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.3109/02713683.2014.903498 es_ES
dc.description.upvformatpinicio 1 es_ES
dc.description.upvformatpfin 10 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 39 es_ES
dc.description.issue 12 es_ES
dc.relation.senia 280988 es_ES
dc.contributor.funder Ministerio de Ciencia e Innovación
dc.contributor.funder Generalitat Valenciana
dc.contributor.funder Universitat Politècnica de València


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