Sigireddi Rohini Rao, Bhat Nita, Raviskanthan Subahari, Mortensen Peter William, Harish Bindiganavile Shruthi, Klucznik Richard, Lee Andrew Go
Department of Ophthalmology, Cullen Eye Institute, Baylor College of Medicine, 6565 Fannin St., Houston, TX, 77030, USA.
Department of Ophthalmology, Blanton Eye Institute, Houston Methodist Hospital, 6550 Fannin St., Houston, TX, 77030, USA.
Am J Ophthalmol Case Rep. 2021 Aug 13;23:101191. doi: 10.1016/j.ajoc.2021.101191. eCollection 2021 Sep.
To report a case of bitemporal hemianopsia due to ischemic chiasmopathy after mechanical thrombectomy of a right distal internal carotid artery (ICA) occlusion.
A 60-year-old female presented with left sided weakness and difficulty speaking and was found to have suffered a right internal carotid artery occlusion 10 days after tricuspid valve replacement for severe symptomatic tricuspid valve disease. She underwent mechanical thrombectomy and in hospital and at further follow ups was noted to have a bitemporal hemianopsia, consistent with an ischemic optic chiasmopathy.
The optic chiasm is vascularized by multiple arteries of the Circle of Willis. As such, ischemic optic chiasmopathy is rare. Clinicians should consider ischemic chiasmopathy following cardiac and other surgical procedures including mechanical thrombectomy of the ICA or its branches.
报告1例右侧颈内动脉（ICA）远端闭塞行机械取栓术后发生缺血性视交叉病变导致双颞侧偏盲的病例。
一名60岁女性，出现左侧肢体无力和言语困难，在因严重症状性三尖瓣疾病行三尖瓣置换术后10天被发现患有右侧颈内动脉闭塞。她接受了机械取栓术，住院期间及进一步随访时发现有双颞侧偏盲，符合缺血性视交叉病变。
视交叉由 Willis 环的多条动脉供血。因此，缺血性视交叉病变较为罕见。临床医生在心脏及其他外科手术后，包括ICA或其分支的机械取栓术后，应考虑缺血性视交叉病变。
