1ピースアクリル眼内レンズと3ピースアクリル眼内レンズの術後屈折変化の検討

Changes in refraction following insertion of one-piece and three-piece acrylic intraocular lens

要約　目的：アクリル製の1ピースと3ピース眼内レンズを挿入した後の屈折変化の報告。対象と方法：30か月間に眼内レンズを挿入した274例402眼を対象とした。273眼には1ピース，129眼には3ピース眼内レンズを挿入し，術後屈折値，術前予測屈折値との差，前房深度を検索した。結果：術後3か月以後は，術後の屈折と予測誤差について，両群間に有意差はなかった。術後の前房深度には有意な変化はなかった。結論：アクリル製の眼内レンズ挿入後の屈折の安定性は，1ピースと3ピース間に有意差がない。

Abstract.　Purpose：To report changes in refraction and other parameters after insertion of one-piece and three-piece acrylic intraocular lens（IOL）. Object and Method：This retrospective study was made on 402 eyes of 274 cases who received cataract surgery with IOL implantation in the past 30 months. One-piece IOL was implanted in 273 eyes and three-piece IOL in 129 eyes. Both groups were evaluated for postoperative refraction up to 5 months,difference or error from preoperatively predicted refraction,and depth of anterior chamber. Results：There were no significant differences between the two groups regarding postoperative refraction and error from predicted value after 3 months of surgery. There was no significant difference in the depth of anterior chamber before and after surgery. Conclusion：There is no difference between one-piece and three-piece IOL regarding stability of refraction after surgery.