白内障合併緑内障眼における白内障術前視野と術後視力

Preoperative visual field and postoperative visual acuity in eyes with cataract and glaucoma

　緑内障患者における白内障術後視力予後を予想するため，白内障手術後矯正視力0.6以上を得た緑内障患者52例52眼について，その術前後の視野をHumphrey （ハンフリー）自動視野計30-2プログラムより得られた最中心4点の閾値測定結果を基にretorospectiveに検討した。最中心4点における術前のpattern deviation （PD）は術後の同4点におけるtotal deviation （TD）と各々有意の相関を示したが，術後視力とはいずれも相関しなかった。上記術前PDが，（1）下耳側は−10dB以上，（2）上下鼻側のうちどちらかが−10dB以上，（3）下2点の平均が−16dB以上，の3点が緑内障眼で白内障手術後視力0.6以上を得る十分条件と考えられた。

We reviewed 52 eyes with glaucoma which underwent surgery for associated cataract. As the inclusion criteria, the postoperative visual acuity had to be 0.6 or better. The visual field was tested, before and after surgery, by 30-2 program of Humphrey Visual Field Analyzer. A significant correlation was present between pattern deviation value at the four most central test points before surgery and the total deviation value for the same points after surgery. The postoperative visual acuity was correlated with none of the four pattern deviation values before surgery. All the following 3 preoperative conditions had to be fulfilled in order to achieve visual acuity of 0.6 or better after cataract surgery in glaucoma eyes. 1. Pattern deviation value of -10dB or more at the most central inferior nasal point. 2. Pattern deviation value of-15dB or more at the most central superior or inferior nasal point. 3. Mean pattern deviation value of-16dB or more at the most central inferior nasal and temporal points.