硝子体手術後早期にガスを抜去した裂孔原性網膜剝離の短期経過

Short-term outcome of rhegmatogenous retinal detachment after early removal of intravitreal gas

要約　目的：裂孔原性網膜剝離に硝子体手術を行い，硝子体中のC₃F₈ガスを早期に抜去した成績の報告。対象と方法：上方または鼻側周辺部に原因裂孔がある新鮮な網膜剝離13眼を対象とした。年齢は48～67歳（平均58歳）である。硝子体手術で裂孔を閉鎖し，15％C₃F₈ガスを硝子体腔に充填し，最低1夜の伏臥位をとらせた。術後5～11日目にガスを抜去した。結果：全例で網膜が復位し，ガス抜去の直後に再剝離した症例はなかった。術後約1か月目に2眼で再剝離があったが，ガス抜去との因果関係は不明であった。結論：裂孔原性網膜剝離に硝子体手術を行い，裂孔を閉鎖してガスで網膜が復位すれば，以後早期にガスを抜去しても，直後の再剝離はない。

Abstract.　Purpose：To report the short-term outcome of vitreous surgery for rhegmatogenous retinal detachment after early removal of intravitreal gas. Cases and Method：This study was made on 13 eyes of 13 patients who had retinal break in the superior or nasal periphery. Their age ranged from 48 to 67 years,average 58 years. As a standard procedure,the retinal break was closed by vitreous surgery followed by filling of vitreous cavity by 15％C₃F₈ gas. The patient remained in prone position overnight or longer. The gas was removed 5 to 11 days after surgery. Result：The retina was reattached in all the eyes when the gas was removed. Retinal detachment recurred in 2 eyes about one month after surgery. Removal of intravitreal gas was not causatively related with recurrence. Conclusion：Following vitreous surgery and gas tamponade for rhegmatogenous retinal detachment,early removal of intravitreal gas does not induce immediate recurrence of retinal detachment.