27 August 2003 Ultraviolet spectrophotometry of contact lens materials
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Abstract
Ultraviolet radiation is potentially damaging to ocular tissues. Incorporation of UV-blocking monomers into contact lens materials provides attenuation of this radiation, leading to a reduction in UV incidence at the corneal surface. The extent and spectral characteristics of this attenuation varies according to lens type and parameters. Spectrometry has traditionally been used to measure UV attenuation of a contact lens. A novel contact lens holder was designed and constructed to facilitate the mounting of the lens in an intact and hydrated state during measurement. The UV transmission characteristics of two commercially available hydrogel contact lenses were investigated using the Perkin Elmer Lambda900 UV/VIS/NIR dual beam spectrometer.
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Linda A. Moore, Linda A. Moore, Chanel Hayden, Chanel Hayden, James Edward Walsh, James Edward Walsh, } "Ultraviolet spectrophotometry of contact lens materials", Proc. SPIE 4876, Opto-Ireland 2002: Optics and Photonics Technologies and Applications, (27 August 2003); doi: 10.1117/12.464025; https://doi.org/10.1117/12.464025
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