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要約 目的:後囊破損例に対して眼内レンズ(IOL)optic capture固定法を行った症例の術後屈折値変化について検討した。
対象と方法:対象は今村総合病院において過去55か月間に行われた白内障手術症例のうち,後囊破損によりIOL囊内固定が困難となった45眼。これらの症例で目標屈折値と術後屈折値(術後1週目,4週目,12週目,24週目,48週目)との差について検討した。なお,チン小帯脆弱症例,固定が不完全な症例,再手術症例は除外した。また,使用したレンズは全例エタニティーナチュラル® NX-60(参天製薬)(以下,NX-60)であった。
結果:目標屈折値と術後屈折値との差は,術後1週目:+0.28±1.18D,術後4週目:+0.24±0.86D,術後12週目:+0.09±0.80D,術後24週目:+0.15±0.69D,術後48週目:+0.06±0.66Dとなり,目標屈折値と術後屈折値に有意な差はなかった。
結論:NX-60を用いたoptic capture固定法では,術直後はやや遠視傾向となったが,術後48週では目標値に近づいた。
Abstract Purpose:To investigate the postoperative refractive changes in patients who underwent intraocular lens(IOL)optic capture fixation for posterior capsular breakage.
Cases and Methods:Of cataract surgery patients who had undergone cataract surgery at Imamura General Hospital in the past 55 months, 45 eyes were included in this study because it was considered difficult to fix the intraocular lens in the bag due to damage to the posterior capsule. We investigated the difference in postoperative refraction values(postoperative weeks 1, 4, 12, 24, and 48)from the preoperative target values in these patients. Exclusion criteria comprised cases with fragile tingles, incomplete optic capture fixation, and revision surgery. The IOL used in all cases were three-piece acrylic lenses:NX-60(Santen).
Results:The difference between the target refraction value and the postoperative refraction value was +0.28±1.18D at one week after surgery, +0.24±0.86D at four weeks after surgery, +0.09±0.80D at 12 weeks after surgery, +0.15±0.69D at 24 weeks after surgery, and +0.06±0.66D at 48 weeks after surgery.
Conclusion:With the optical capture fixation method using NX-60, there was a slight tendency for hyperopia immediately after surgery, but the target value was approached 48 weeks after surgery.
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