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72歳女性が17か月前に左眼,9か月前に右眼の白内障手術とハイドロジェル眼内レンズ(IOL)挿入術を受けた。右眼IOLが混濁し,視力が0.2に低下した。62歳男性が23か月前に右眼白内障手術とIOL挿入術を受けた。そのIOLが混濁し,視力が指数弁に低下した。両患者とも糖尿病があり,1人には心筋梗塞の既住があった。摘出したIOLをエネルギー分散X線分析(EDXA)とアリザリンレッド染色で検索した結果,石灰化が混濁の原因であった。
A 72-year-old woman had received cataract surgery with implantation of hydrogel intraocular lens(IOL)in her left eye 17months before and in her right eye 9months before. The IOL in her right eye was found to be opaque with the visual acuity down to 0.2. Another 62-year-old man had received cataract surgery with IOL implantation in his right eye 23months before. The IOL was found to be opaque with the visual acuity down to counting fingers. Both patients had diabetes mellitus. One had a past history of myocardial infarction. Energy-dispersive x-ray analysis(EDXA)and alizarin red staining showed opacification of IOL to be due to the calcification of the IOL.
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