Disinfecting solutions for soft contact lenses using different color indicators

Optometry and Vision Science : Official Publication of the American Academy of Optometry
Rosa M García-MonlleóM Melgosa

Abstract

The color change reached in two commercial disinfecting solutions for soft contact lenses using new color indicators has been analyzed, and its relationship with the temporal evolution of the hydrogen peroxide concentration, responsible for the disinfection process, has been examined. The results are compared with another commercial solution using a different color indicator. Color measurements of the disinfecting solutions were performed at 2-minute intervals for over 2 hours using a Photo-Research PR-704 spectroradiometer with horizontal optical axis. Samples were placed at the floor of a VeriVide CAC 120 light booth with a Munsell gray mask behind them. Two different standard light sources, representative of outdoor and indoor illumination, were used. The hydrogen peroxide concentration during the disinfection process was measured for each commercial solution using a Beckman DU-7 spectrophotometer. The temporal evolutions of color for the two new disinfecting solutions were qualitatively different. CIELAB color differences induced in these two new disinfecting solutions were 1.5 and 2.2 times greater than that measured in the earlier comparative solution and occur in a more appropriate direction of color space for users with...Continue Reading

References

Apr 1, 1997·Optometry and Vision Science : Official Publication of the American Academy of Optometry·M MelgosaM J Velasco
Jun 18, 2004·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Kwok Hei MokVincent Wing-Hong Lee
Jun 18, 2004·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Anthony Crabbe, Pamela Thompson
Nov 24, 2004·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Konrad PesudovsDavid B Elliott

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