Liao R, Li S, Liu Y, Guo Y, Pan H, Tao X
First Affiliated Hospital, Sun Yat-sen University of Medical Sciences Guangzhou, China.
Yan Ke Xue Bao. 1995 Mar;11(1):37-40.
To investigate the occurrence, outcome and influencial factors of the peripheral anterior synechia (PAS) following implantation of posterior chamber intraocular lenses for finding a way to reduce the PAS.
40 eyes of 38 senile cataract patients with normal chamber angle and intraocular pressure (IOP) preoperatively were examined.
Extracapsular cataract extraction was performed under microscope with insertion of a posterior chamber lens implant vaulted anteriorly by 10 degrees. Gonioscopy and slit-lamp examination and photography of the operated eyes were performed 3 to 6 months postoperatively.
PAS were found in 20 (50%) of the 40 eyes. Among the 20 eyes with PAS the locations of 23 haptics in 17 eyes corresponded with those of the PAS. PAS were seen more frequently with vertically sulcus-fixated haptics than with the horizontally capsular-fixated haptics, showing a significant difference (P < 0.05). 88% of the eyes with PAS had pupillary deformation, but their visual acuities and IOP were not affected.
PAS is more likely to occur with vertically sulcus-fixated IOL. Rotating the capsular-fixated haptics to the horizontal position may reduce the incidence of PAS. Gonioscopy should be a routine follow-up examination.
探讨后房型人工晶状体植入术后周边前粘连（PAS）的发生情况、转归及影响因素，以寻找降低PAS的方法。
对38例术前房角及眼压（IOP）正常的老年性白内障患者的40只眼进行检查。
在显微镜下进行白内障囊外摘除术，并植入一枚前房角抬高10度的后房型人工晶状体。术后3至6个月对术眼进行前房角镜检查、裂隙灯检查及摄影。
40只眼中有20只眼（50%）发生了PAS。在20只发生PAS的眼中，17只眼中23个襻的位置与PAS的位置相对应。垂直沟固定襻的PAS发生率高于水平囊袋固定襻，差异有统计学意义（P < 0.05）。88%发生PAS的眼有瞳孔变形，但视力和IOP未受影响。
垂直沟固定人工晶状体更易发生PAS。将囊袋固定襻旋转至水平位置可能降低PAS的发生率。前房角镜检查应作为常规随访检查。
