Surgical peripheral iridectomies occluded by vitreous , exudation or omission of peripheral iridectomy during cataract operation were the most common causes 周边虹彩切除处被玻璃体、渗出物覆盖或手术时没有做周边虹彩切除术是发生瞳孔阻塞最常见的原因。
While 27 eyes relieved pupillary block after laser iridotomy or surgical peripheral iridectomy , 4 eyes required vitrectomy or laser photomydriasis to relieve pupillary block 27只眼经雷射虹彩瞳孔术或外科周边虹彩切除术后可以解除瞳孔阻塞,另4只眼无法解除而需作玻璃体切除术或雷射光瞳孔放大术。