白内障術後の早期眼圧変化

Early postoperative intraocular pressure after cataract surgery

　白内障術後早期の眼圧を変化させる因子を検討した。対象眼は62例90眼で，対象を1）粘弾性物質の種類2）術式3）眼内レンズの有無4）白内障の程度5）嚢内粘弾性物質の吸引の有無の5つの因子について2群に分け検討した。粘弾性物質の種類ではヒーロン^®とオペガン^®の間に有意差は認められなかったが，ヒーロンの方が眼圧上昇が長時間持続した。水晶体嚢外摘出術（以下ECCE）と超音波水晶体乳化吸引術（以下PEA）では有意差はなく，眼内レンズの有無も有意差を認めなかった。白内障の程度は過熟白内障は有意に眼圧上昇を認めた。眼内レンズ挿入後に嚢内の粘弾性物質を吸引すると有意に眼圧上昇を防ぐことができた。

We evaluated the intraocular pressure (TOP) up to 72 hours after cataract surgery in 90 eyes, regard-ing: surgical technique, presence of intraocular lens (TOL), grade of cataract, type of viscoelastic material and its removal or nonremoval. The post-operative IOP was independent of the presence or absence of IOL. There were no differences between extracapsular cataract extraction and ultrasonic phacoemulsification-aspiration. There was a signif-icant rise in IOP in eyes with hypermature cataract (p＜0.01). There was no difference in IOP between HealonT^TM and Opegan^TM, although the rise in IOP tended to persist longer after the former. Rise in IOP could be prevented by removing the viscoelas-tic material after insertion of IOL (p＜0.05).