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(18-P2-18) ヌンチャク型シリコンチューブ(以下,N-ST)による涙道形成術の治療成績を考察した。涙道閉塞症または狭窄症の68例を対象とし,抜去後,細隙灯顕微鏡所見,涙嚢洗浄により評価を行った。有効例は41例(60%)で,そのうち鼻涙管閉塞は有効率66%(29例中19例)を示したが,慢性涙嚢炎では36%(14例中5例)とその成績に有意差を示した。涙点狭窄,涙小管断裂は全例治癒したが,涙小管閉塞ではN-ST留置中に涙小管の狭窄をきたし,慢性涙嚢炎とともに抜去困難な傾向がみられた。N-STによる涙道形成術は有効例も多く,治療の第一選択として試みられるべき方法であるが,適応の選択,術前後の経過観察に十分な注意が必要である。
We inserted a U-shaped silicone tube into the canaliculi in 68 patients with epiphora due to obstruction or stenosis of the lacrimal system. The tube was removed after an average of 19 weeks. The treatment was successful in 41 patients (60%). It was successful in 5 of 14 patients (36%) with chronic dacryocystitis and in 19 of 29 patients (66%) with nasolacrimal duct obstruction. It was successful in 2 cases each of lacrimal punctal stenosis and canalicular trauma. Canalicular stenosis persisted or recurred in 6 of 11 patients with canalicular atresia and in 5 of 14 patients with chronic dacryocystitis. The findings show the usefulness of the present therapeutic modality in the treatment of obstruction or stenosis of the lacrimal system as the first choice. Due attention is necessary in the selection of patients and in posttreatment follow up.
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