方法：前瞻性研究。共收集31例(42眼)白内障合并PES患者接受白内障摘除术，选27例(42眼)无PES的白内障患者作为对照组。Pentacam检测术前和术后1～3mo的眼内压(IOP)，前房深度(ACD)，前房容量(ACV)，前房角宽度(ACA)和瞳孔直径(PD)。t检验检测术前和术后的变量。

结果：PES组术前平均IOP明显高于对照组(P=0.017)。两组在术前和术后的ACD，ACV，ACA，IOP值差异在1～3mo均有统计学意义(P<0.05)。两组相比，PES组的IOP下降更为显著； 两组ACD，ACV和ACA的增量相似。PES组术前PD值明显高于术后(P<0.05)。两组IOP，ACD，ACV，ACA和PD的变化在术后3mo均趋于稳定。

结论：白内障超声乳化术均可显著降低患眼的IOP，增加ACD，ACV和ACA的值，无论患眼是否患有PES。ACD，ACV，ACA，PD和IOP的变化在术后3mo趋于稳定。尽管PES组IOP下降更为明显，但无论白内障眼是否患有PES，术后均表现出相似的眼前节特征。PES患者早期接受白内障摘除术不仅能加深前房，且可使IOP稳定在正常范围。

METHODS:We enrolled 42 cataractous eyes of 31 PES patients undergoing cataract extraction in this prospective study, 42 cataractous eyes of 27 patients without pseudoexfoliation comprised a control group. Intraocular pressure(IOP),anterior chamber depth(ACD), anterior chamber volume(ACV), anterior chamber angle width(ACA)and pupil diameter(PD)measurements were obtained preoperatively, and at 1 and 3mo postoperatively with the Pentacam. For the variables between the pre- and post operative periods; t-test was used.

RESULTS: In PES group, the mean preoperative IOP level was significantly higher than the control group(P=0.017). In both groups, the differences in ACD, ACV, ACA and IOP values measured preoperatively and postoperatively at 1, and 3mo were statistically significant(P<0.05). When two groups were compared with each other, while reduction in IOP levels were more dramatic in PES group; increase in ACD,ACV and ACA were similar in both groups. Preoperative PD measurements were statistically higher than postoperative values(P<0.05)in PES group. Changes in IOP, ACD, ACV, ACA and PD were stabilized at 3mo postoperatively in both groups.

CONCLUSION:Uneventful phacoemulsification significantly reduces IOP, increases ACD,ACV and ACA in eyes with and without PES. Changes in ACD, ACV, ACA, PD and IOP remain stable at 3mo postoperatively. Although IOP reduction is more evident in PES group, cataractous eyes with and without PES exhibits similar anterior segment features after surgery. An early cataract extraction in pseudoexfoliation not only provides a wide and deep anterior chamber, but also leads to a stabile IOP control similar to eyes without PES.