摘要目的 观察原发性闭角型青光眼激光术后A超显示的解剖结构改变.方法 90例(90眼)原发性闭角型青光眼(PACG)纳入本研究,随机被分为两组,B组采用360.虹膜成形联合YAG激光周边虹膜切除术；A组采用YAG激光周边虹膜切除术.应用A型超声测量PACG激光前后前房深度、晶状体厚度、眼轴长度；并做眼压测量.各项均值进行组间比较和分析.结果 在A组中,除晶状体厚度外,各项均值(前房深度、眼轴长度、眼压)与术前相比,差异有统计学意义(t=2.438,P＜0.01；t=-2.135,P＜0.05；t=2.524,P＜0.01).在B组中,除前房深度和晶体厚度外,术后,眼轴、眼压比术前降低(t =2.517,P＜0.01；t=2.679,P＜0.01).眼轴缩短的幅度与眼压的降低的幅度成正相关(r =0.713,P＜0.01).结论 原发性闭角型青光眼激光术后眼轴缩短,眼压降低,眼轴的缩短与眼压的降低有关.

abstractsObjective To observe change of the anatomical structure of primary angle-closure glaucoma (PACG) after laser surgery by A-mode ultrasonic scanning.Methods Anatomical structures including the anterior chamber depth ( ACD),lens thickness (LT) and the axial length ( AL),were measured by A-mode ultrasonic scanning in 90 eyes of 90 patients with PACG before and after laser surgery.90 patients were randomly divided into two groups,Group A underwent Nd:YAG laser iridectomy,while group B did the combined surgery of laser iridoplasty around 360°,followed by Nd:YAG laser iridectomy.All mean values were analyzed with t-test.Results In group A,the eyes had significant differences in all items except LT compared with that before surgery (t =2.438,P ＜ 0.01 ; t =- 2.135,P ＜ 0.05 ; t =2.524,P ＜ 0.01 ).While in group B,there was a statistically significant difference in IOP and AL after surgery (t =2.517,P ＜0.01; t =2.679,P ＜ 0.01 ).The reduction of AL had positive relationship with IOP reduction (r =0.713,P ＜0.01 ).Conclusion There is a small but statistically significant decrease in AL and IOP after laser surgery.This reduction of AL was related to IOP reduction.