Although the nonaffected side appears to be clinically normal in hemifacial spasm (HFS), it is not known whether this side can be considered normal regarding histopathological findings. The purpose of this study was to objectively evaluate and compare orbicularis oculi samples of patients with HFS (not previously treated with botulinum toxin) and control patients undergoing cosmetic upper eyelid blepharoplasty.

中文翻译：

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面肌痉挛的患侧和非患侧的眼眶形态变化。

尽管未受影响的一侧在面肌痉挛（HFS）中似乎在临床上是正常的，但就组织病理学发现而言，尚不知道该一侧是否可以视为正常。这项研究的目的是客观地评估和比较HFS患者（以前未接受肉毒杆菌毒素治疗）和接受美容性上眼睑眼睑整形手术的对照患者的眼轮虫样本。