May 1986
Volume 27, Issue 5
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Articles  |   May 1986
A comparison of Nd:YAG laser damage thresholds for PMMA and silicone intraocular lenses.
Investigative Ophthalmology & Visual Science May 1986, Vol.27, 795-798. doi:
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      P E Bath, A B Romberger, P Brown; A comparison of Nd:YAG laser damage thresholds for PMMA and silicone intraocular lenses.. Invest. Ophthalmol. Vis. Sci. 1986;27(5):795-798.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Power density producing damage at a probability of 0.5 (ie, damage threshold, DT-50) was determined for PMMA (with/without UV absorber) and Silicone intraocular lenses. Scattered light from a collinear diagnostic He:Ne beam was one of four damage monitors deployed to enhance the sensitivity of the system. In order of increasing laser resistance the following results were obtained: injection molded PMMA (1.9/GW/cm2) Silicone (2.63 GW/cm2) Lathe-cut PMMA (4.47 GW/cm2), Lathe-cut PMMA with UV absorber (8.32 GW/cm2), Cast-molded PMMA (12.30 GW/cm2). An analysis of variance revealed interclass differences significant at the .01 level. Cast-molded PMMA was the most laser-resistant IOL material.

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