硝子体手術に発見される硝子体基底部裂孔

Retinal breaks at vitreous base detected after vitrectomy

　硝子体手術終了時に全周強膜圧迫を行いながら眼底検査を行い，手術終了時には裂孔のないことを確かめ，術後1週以内に鋸状緑近傍に裂孔の発見された例について検討した。発生率は初回手術140眼中8眼（5.7％）で再手術例には見られなかった。全例有水晶体眼で，裂孔の方向性は術者の右手側に6眼，左手側に2眼であった。強膜創に陥入した周辺部の残存硝子体が，術後に収縮し硝戸体基底部を牽引して裂孔を形成するものと考えられた。

We detected retinal breaks at the vitreous base within 7 days in & out of 140 eyes after vitreous surgery as the first procedure (5.7%). In all these eyes, retinal breaks had been ruled out by scleral depression at the end of surgery. The breaks were located at 10 o' clock position in 6 eyes and at 2 o' clock in 2. All the 8 eye9 were phakic prior tosurgery. Fives eye remained phakic and 3 eyes aphakic as the result of additional pars plana len-sectomy. There was no incidence of such retinal breaks in another series of 67 eyes which underwent vitrectomy as re-operation. It appeared that the breaks at the vitreous base resulted from traction by incarceration of residual vitreous at the scleral wound.