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H. Matsushima, K. Mukai, M. Nagata, T. Senoo; Differences Between Calcification and Whitening After Intraocular Lens Implant. Invest. Ophthalmol. Vis. Sci. 2010;51(13):5749. doi: https://doi.org/.
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© ARVO (1962-2015); The Authors (2016-present)
Calcification in hydrophilic acrylic intraocular lens (IOL) and whitening in hydrophobic acrylic IOL are one of complications after cataract surgery. In this study, we analyze the differences between calcification and whitening.
Six calcification in hydrophilic acrylic IOLs (H60M, Baush&Lomb) and 8 whitening in hydrophobic acrylic IOLs (MA60BM, Alcon) were extracted because of IOL dislocation or visual disturbance. The extracted IOLs were stored in physiological saline at 32 °C, and IOL surfaces were examined under light microscopy. To evaluate the effect that calcification and whitening had on visual function, light transmission in the visible range of 360-800 nm was measured using a spectrophotometer. Next, the extracted IOLs were placed in an eye model with an attached CCD camera, and images projected on the retina were created. Unused IOLs were also evaluated for comparison.
Light transmittance of the IOLs were measured, and the integral value in the visible range was calculated as 44.53±22.74% in the calcification IOL versus 92.42% in the unused control IOL. And 82.00±4.59% in the whitening IOL versus 88.87% in the unused control IOL. A clear image was obtained with the unused IOL, a mild hazy image was obtained with the whitening IOL, but a completely hazy images was obtained with the calcification IOL using an eye model.
Decrease of visual function by calcification is significant to compare with whitening.
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