粘弾性物質注入に起因した術後眼内異物の1例

A case of intraocular foreign body following injection of viscoelastic material in cataract surgery

　84歳女性の両眼に白内障手術を行った。右眼手術には問題がなかった。左眼手術のときに前房に粘弾性物質を注入した際に無数の微細粒子が混入し，術後3日目には眼内レンズと後嚢の間隙に直径0.4mmの白色異物になった。この眼内異物の原因は，粘弾性物質の滅菌容器に潤滑剤として使われているシリコーンオイルであると判断された。術後の視力と静的視野に左右の差がないため，眼内異物はそのまま放置し，以後3か月間に問題は生じていない。このような眼内異物は今後も続発する可能性があり，白内障手術での新しい合併症として注意が望まれる。

We performed cataract surgery in an 84-year-old woman. Surgery on her right eye was unevent-ful. During surgery on her left eye, numerous small particles entered the anterior chamber during injection of viscoelastic material. Three days later, a white mass with a diameter of 0.4mm had formed between the in-traocular lens and the posterior capsule. We considered that this foreign body consisted of silicone oil used as a lubricant in the disposable syringe containing the viscoelastic material. There was no difference in visual acuity or static visual field between the two eyes. There has been no untoward complication due to the for-eign body during 3 months after surgery. We advocate due attention to this new type of complication follow-ing cataract surgery.