東京都新宿区と山口県柳井市における白内障手術予定患者の結膜ぬぐい液細菌検査の比較

Bacterial flora in the conjunctival sac in patients prior to cataract surgery in two institutions in Tokyo and Yamaguchi

16か月の期間に2施設で白内障手術予定患者265眼の結膜囊内の常在菌を検索した。1施設は東京都新宿区，他の1施設は山口県柳井市にある。東京では158眼中120眼（76％），柳井では107眼中72眼（67％）から細菌が検出され，総株数はそれぞれ130株と103株であった。65歳未満とそれ以上とでは検出率に有意差がなかった。Corynebacterium属が東京に多く，嫌気性グラム陽性桿菌が柳井で多く検出され，検出率に有意差があった。地域と環境で検出菌が異なるので，術後合併症を予防するためにその現場での細菌学的検査が望ましい。

We investigated the bacterial flora in the conjunctival sac of 265 eyes of patients scheduled for cataract surgery in two institutions during a 16-month period. One institution was located in Tokyo and the other in Yamaguchi Prefecture. Out of 158 eyes in Tokyo,120 eyes were positive for microorganisms. Out of 107 eyes in Yamaguchi,72 were positive. The stains totalled 130 and 103 respectively. There was no significant difference in the incidence of detection of microorganisms between two groups below and over 65 years of age. Corynebacterium was more prevalent in Tokyo and anaerobic Gram-positive rods were more prevalent in Yamaguchi. The findings show that the bacterial flora in the conjunctival sac may differ in different regions and environments. An on-site bacteriological check is desired to prevent postoperative complications.