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Isolated Homonymous Quadrantanopia Associated with Statokinetic Dissociation-A Case Report
伴隨動靜態視覺分離的同側視野象限盲－病例報告
摘要
目的：報告一伴隨動靜態視覺分離的同側視野象限盲之病例。 方法：病例報告。 結果：一位三十八歲男性主訴早上起床忽然發現雙眼左邊視野模糊。眼科各項檢查均正常，除了視野檢查顯示病患雙眼左下四分之一象限盲。腦部電腦斷層發現右腦枕葉有部分缺血性中風。追蹤期間，病患有一連串視野變化，並出現動靜態視覺分離的情形，也就是可以看見移動中的視標，卻無法看見靜止的視標。 結論：視野缺損中的動靜態視覺分離常容易被忽略，這種現象可能是視野恢復的前兆，仔細的動態視野檢查並追蹤一系列的變化是鑑別診斷的重要依據。
關鍵字
無資料並列摘要
Purpose: To describe a 38-year-old male developing visual field defect associated with statokinetic dissociation. Method: Interventional case report. Result: A 38-year-old male presented to our clinic with a complaint of sudden onset of left side visual field loss. The entire ophthalmological examinations gave normal results except for the visual field examinations. Goldmann perimetry revealed a left homonymous inferior quadrantanopia. Image of computerized topography displayed an infarction area over the right occipital lobe. During the subsequent follow-ups, the patient could detect moving targets, but not stationary objects inside the defective visual field. This unique symptom is named statokinetic dissociation, also known as Riddoch phenomenon. Conclusion: Statokinetic dissociation (Riddoch phenomenon) can present as a leading sign of visual field recovery. It may be clinically overlooked and misdiagnosed. Careful series kinetic visual field examinations to trace the subsequent evolution are important for its differential diagnosis.