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First Author: H.Matsushima JAPAN
Co Author(s): M. Nagata T. Senoo
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A hydrophobic acrylic is one of useful materials for intraocular lens (IOL) optics. And it is frequently implanted in the world. However, opacifications of center optics (glistening) and of surface optics (whitening) are sometimes observed by slit lamp after long time implanted the hydrophobic acrylic IOLs. In this study, we evaluate extracted hydrophobic acrylic IOLs because of dislocation or disturbance of visual function.
Department of Ophthalmology, Dokkyo Medical University, Tochigi, Japan
Four teens IOLs were extracted because of IOL dislocation (11 cases) or visual disturbance (3 cases) after phacoemulsification with IOL (MA60BM, Alcon). Implanted periods were from 1 year 10 months and 14 years 11 months. The extracted IOLs were observed using light microscope and light transmissions were measured using spectrophotometer (U-4100, Hitachi). And contrast sensitivities were also measured using a model eye.
The glistening and whitening were observed in all extracted IOLs. However; the grades of glistening and whitening were different in each IOL. The light transmissions using spectrophotometer of all extracted IOLs decreased and there were correlations between decrease of light transmission and implanted periods. In visual disturbance cases, the light transmissions were especially decreased to more than 10%. And contrast sensitivities were decreased in the extracted IOLs.
Opacifications of IOL optics such as glistening and whitening were appeared in all extracted IOLs. Light transmission of IOL was decreasing overtime. And contrast sensitivities were decreased. Continuously evaluations of effect to visual function by glistening and whitening will need.