Klapper S R, Jordan D R
University of Ottawa Eye Institute, Ontario, Canada.
Ophthalmic Plast Reconstr Surg. 1999 Mar;15(2):100-5. doi: 10.1097/00002341-199903000-00006.
Active lower eyelid retraction on upgaze is a rarely described finding. The purpose of this study is to describe the clinical and operative findings in two patients with this unique eyelid movement disorder.
The authors identified active, unilateral lower eyelid retraction on upgaze in two patients who had no other ocular or systemic abnormalities.
Surgical extirpation of the lower eyelid retractor complex was carried out in both cases. During one of the procedures, performed under local anesthesia, the lower eyelid retractors were observed to retract actively on upgaze. Postoperatively, lower eyelid retraction on upgaze was not present in either case.
The authors are aware of only one other case report describing active, paradoxical lower eyelid retraction on upgaze. The mechanism of eyelid retraction in this previous report and in the two patients described herein is not known. The authors postulate that these unique cases may represent a previously unrecognized form of congenital, aberrant innervation of the oculomotor nerve.
上视时主动下睑退缩是一种鲜有描述的表现。本研究的目的是描述两名患有这种独特眼睑运动障碍患者的临床及手术发现。
作者在两名无其他眼部或全身异常的患者中发现了上视时主动、单侧下睑退缩。
两例均行下睑缩肌复合体手术切除。其中一例在局部麻醉下进行手术，术中观察到上视时下睑缩肌主动退缩。术后，两例上视时均未出现下睑退缩。
作者仅知晓另一例描述上视时主动、反常下睑退缩的病例报告。此前该病例报告及本文所述两名患者的眼睑退缩机制尚不清楚。作者推测这些独特病例可能代表一种此前未被认识的先天性动眼神经异常支配形式。
