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KMID : 1011420140190020179
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Journal of Korean Ophthalmic Optics Society
2014 Volume.19 No. 2 p.179 ~ p.188
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The Deposition of Tear Protein according to Soft Lens Materials and The Cleaning Efficacy of Multi-purpose Solution according to the Surfactant Types
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Park Mi-Jung
Kwon Young-Dae
Lee Wang-Jae
Kim So-Ra
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Abstract
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Purpose: The present study was aimed to investigate the cleaning efficacy of multi-purpose solutions containing different types and content of surfactants and their effect on the visible light transmittance of soft lens.
Methods: Soft lenses made of different materials (etafilcon A and hilafilcon B) were deposited tear proteins by using the
artificial tear and then compared the resulting cleaning efficacy and visible light transmittance after cleaning the lens with 6 types of multi-purpose solutions containing different content of surfactants.
Results: The cleaning efficacy of multi-purpose solutions was variously shown as approximately 23~43% according to the active concentration of surfactants and surface tension in multi-purpose solution when etafilcon A lens cleaned with rubbing. The highest cleaning efficacy was detected when cleaned with the multi-purpose solution containing hydrogen peroxide besides surfactant however, the amount of remaining protein was still high on the lens. After washed with multi-purpose solution, the visible light transmittance of lens was in 89.8 to 90.8%. The amount of protein deposited on hilafilcon B lens was very small compared with it on etafilcon A lens even though it was incubated in artificial tears for 7 days, which showed 5~10% of protein amount in etafilcon A lens and the decrease of visible light transmittance was also not significant. In case of rubbing with multi-purpose solution, the cleaning efficacy on hilafilcon B lens was in 45.4 to 67.4% however, the order of cleaning efficacy of multipurpose solution was different from it on etafilcon A lens. The visible light transmittance of hilafilcon B lens has been restored to the level of new lens.
Conclusions: From the result, it is concluded that the appropriate multipurpose solution should be selected according to the lens material and the amount of protein deposit on the basis of understanding surfactants and active principle for proper care of protein deposit on soft lens and the cleaning with rubbing is more efficient for lens care regardless of manufacturer’s guideline.
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KEYWORD
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Soft contact lens, Multi-purpose solution, Surfactant, Cleaning method, Cleaning efficacy, Visible
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