UV-visible transmittance of silicone-hydrogel contact lenses measured with a fiber optic spectrometer

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Title: UV-visible transmittance of silicone-hydrogel contact lenses measured with a fiber optic spectrometer
Authors: Fuentes Rosillo, Rosa | Fernandez-Varo, Helena | Pascual, Inmaculada | García Llopis, Celia
Research Group/s: Holografía y Procesado Óptico
Center, Department or Service: Universidad de Alicante. Departamento de Óptica, Farmacología y Anatomía | Universidad de Alicante. Instituto Universitario de Física Aplicada a las Ciencias y las Tecnologías
Keywords: Silicone-hydrogel contact lenses | Optical fiber spectrometer | Transmittance
Knowledge Area: Óptica
Date Created: Jul-2013
Issue Date: 18-Nov-2013
Publisher: SPIE, The International Society for Optics and Photonics
Citation: R. Fuentes ; E. Fernández ; I. Pascual ; C. García; UV-visible transmittance of silicone-hydrogel contact lenses measured with a fiber optic spectrometer. Proc. SPIE 8785, 8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications, 8785AZ (November 18, 2013); doi:10.1117/12.2025710
Abstract: Protein deposition is one of the most frequent contaminants occurring on hydrophilic contact lenses and may modify the lens optical properties. The silicone-hydrogel contact lenses usually adsorb a lower amount of proteins than the conventional hydrogel ones. However it is important to study the influence of protein deposits on some silicone-hydrogel contact lenses properties, such as UV-Visible transmittance. In this study it is measured de UV-Visible properties of new and worn silicone-hydrogel contact lenses and the transmittance changes that can occur with wear are quantified. An optical fiber spectrometer has been used for measuring the transmittance of contact lenses. This spectrometer has the advantage that the lens can be positioned horizontally and the light beam passes through it perpendicularly. For the measurements, it was necessary to make a special cuvette to put inside the lens and keep it submerged in sterile saline solution. The contact lenses used were Biofinity®. They are manufactured by CooperVision with a material whose technical name is Comfilcon A. This material has not yet been analyzed for this purpose. Moreover, in this type of studies are commonly taken lenses of power -3.00D, however we have not limited to a single power value but we have extended the range to lower and higher values regarding to the standard power in order to see how this parameter affects.
Sponsor: We thank CooperVision for supplying the contact lenses evaluated in this study. This work was supported by the “Generalitat Valenciana” (Spain) under project PROMETEO/2011/021, ISIC/2012/013 and GV/2012/099 and by “Ministerio de Ciencia e Innovación” (Spain) under project FIS2011-29803-C02-02.
URI: http://hdl.handle.net/10045/35421
ISBN: 9780819496010
ISSN: 0277-786X
DOI: 10.1117/12.2025710
Language: eng
Type: info:eu-repo/semantics/article
Rights: Copyright 2013 Society of Photo-Optical Instrumentation Engineers. This paper was published in Proceedings of SPIE, vol. 8785, and is made available as an electronic reprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Peer Review: si
Publisher version: http://dx.doi.org/10.1117/12.2025710
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