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要約 目的:無菌性眼内炎(TASS)は白内障手術などの内眼手術後,非感染性物質によって前眼部に発症する炎症性疾患といわれている。今回,眼内レンズを挿入後,late-onset TASSを発症したと思われる連続2例を経験したので報告する。
症例:昭和大学病院附属東病院で同日に白内障手術が施行された73歳の女性と71歳の男性の2例であった。術中合併症はなかった。術翌日は1例に軽度の角膜デスメ膜皺襞を認めたものの,2例とも前房内炎症は軽度であった。視力はそれぞれ(1.0),(1.2)と改善していた。術12日目の再診で2例ともに霧視を自覚し,毛様充血,瞳孔領にフィブリンの析出を伴う無痛性の前房内炎症と虹彩後癒着,1例にデスメ膜皺襞を認めた。視力は(0.4),(0.4)にまで低下した。またレーザーフレアセルメータでフレア値の上昇を認めた。これらの結果からlate-onset TASSを疑い,術12日目から抗菌薬,副腎皮質ステロイド点眼に加え,非ステロイド性抗炎症薬,散瞳薬の点眼を追加した。点眼のみで2例とも前房内炎症,デスメ膜皺襞は徐々に改善した。術後6か月の時点で1例に虹彩後癒着の残存を認めるものの,視力は(1.2),(1.2)となり,自覚症状も改善した。
結論:白内障手術後はlate-onset TASSを発症する可能性があるため,術後注意深く観察する必要がある。
Abstract Purpose:Toxic anterior segment syndrome(TASS)is said to be an inflammatory disease that develops in the anterior segment due to non-infectious substances after intraocular surgery such as cataract surgery. We report two consecutive cases suspected of subacute-onset TASS after insertion of intraocular lens.
Case:A 73-year-old woman and a 71-year-old man underwent cataract surgery at Showa University East Hospital. There were no intraoperative complications. The day after surgery, Descemet fold was mildly observed in one case. Inflammation in the anterior chamber was mild in both cases. Corrected visual acuity improved to 1.0 and 1.2 respectively. On 12th day of surgery, both patients were aware of blurred vision. They showed ciliary injection, painless anterior chamber inflammation with fibrin deposition in the pupillary area and posterior synechia. One case showed the descemet fold. Corrected visual acuity decreased to 0.4 in both cases. Increase in flare value was observed with a laser flare cell meter. From these results, we suspected late-onset TASS. From the 12th day of surgery, in addition to antibacterials and corticosteroids, nonsteroidal anti-inflammatory drugs and mydriatics were added. In both cases, inflammation in the anterior chamber and descemet fold gradually improved only by eye-drop. Although one posterior synechia remained 6 months after surgery, corrected visual acuity improved to 1.2 in both cases. Subjective symptoms improved respectively.
Conclusion:These cases illustrate that surgery may cause late-onset TASS.
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